CRIO: Unflatten from string into lvclass not working in deployment

Hello,
I am working on a problem for some hours now and I need some help.
I am using a cRIO-9022. I need to do some tasks, and I created a couple of classes which contain the parameters and the methods. They contain using dynamic dispatch VIs. I have an array of these classes (all derived from a parent class) which is my "configuration". I am using "flatten to string" and saving those file on disk. "Unflatten from string" is working fine. These file is created on a LV WIndows Application.
I need to use this file on my cRIO: Unflatten from string, and then work with the array of my classes. When running the cRIO Main VI it's working fine. But when building the application and deploying it as startup, it's not working. I am getting:
Error 1403 occurred at Unflatten From String in Gantry CommEngine.vi->RT Main.vi
Possible reason(s):
LabVIEW: Attempted to read flattened data of a LabVIEW class. The data is corrupt. LabVIEW could not interpret the data as any valid flattened LabVIEW class.
What I tried so far:
- Added the whole lvlib containing the classes and also every single class to "Source files / always included".
- Created constants of the array (containing the classes) to the VI (forcing LV to include the classes?)
- Loaded the file from cRIOs flash and also by shared variable
What else can I do?
Thanks a lot for support!

I tried to reproduce the matter, but couldn't.
I attached my example to the post.
What it does:
It creates a class with only a string a bool and a number. This class oblect is saved to C:/somename.xml. The number is a random number.
In the second case the same file is read and the number broadcasted to a variable.
It worked quite fine building it as a startupexe.
Nothing else was necessary. Does it work for you?
Attachments:
class exe.zip ‏45 KB

Similar Messages

Scan from string to timestamp not working

Hi,
I have a problem with the "Scan from string".
The format string "%<%H:%M:%S%ds%bs%y>T"
works for the input string "11:12:1322sJans2010"
but doesn't work for the input string "11:12:1322sFebs2010"
The only difference is the month (Jan or Feb). I got know idea why!
Could anyone help me?
Regards,
Marcelo
Attachments:
dateString.vi ‏6 KB
date.PNG ‏5 KB

Both work for me in LabVIEW 2009; perhaps this was a bug in 8.6 that's been fixed?
Also, is it possible your operating system is running a different language, in which Jan is the abbreviated form of January but February is something else?

Drag and drop from Contacts into Numbers not working - any solutions?

I'm trying to get my Contacts into a Numbers spreadsheet. According to the Help files, I should be able to select the Contacts and simply drag them into a Numbers sheet (after deleting the default Table). I've tried this many times over and the drag and drop feature doesn't seem to be working. I can select the contacts and drag them over, but the little contact card remains red when I drag it into Numbers and never turns green to allow me to drop into Numbers. It's the same whether I'm trying to drag one contact or many contacts at the same time. I've also tried exporting a vcard and then dragging that file from my desktop into Numbers, but that doesn't work either. I've tried quitting and reopening both applications, as well as restarting my computer. I'm running OSX 10.8.3 and have installed all new software updates, so I'm just at a loss for what to try next.
Does anyone have any solutions for this problem, or an alternative way to get my Contacts into a Numbers file?
Many thanks in advance!

When I tried, it put up a dialog asking me if I wanted to allow Numbers access to my Contacts. Is it possible you tried this and dis-allowed it access?
You might check, anyway. Open Security & Privacy System Prefs, select Privacy tab, and select Contacts from the list of items. Is Numbers listed and is it checked?
Another way to get the contact information into the clipboard is to create an Automator workflow like this:
Open Automator and select Workflow from the options presented.
Drag in the above actions and set the properties as you like. For the Get Contact Information action, you must set the export format to Spreadsheet (tabs).
For the new Text File action, I had to set the Encoding to Unicode (UTF-8) or it would fail.
Select all the contacts you want and then click the Run button in Automator. You can then open the text file with Numbers.
If you envision doing this often, start with an application instead of a Workflow and save it somewhere. Then, you can select your contacts and double-click the Application to export the contacts each time.
The benefit of this method is that you can select all the fields you want to include (at least more than is provided in Drag and Drop).

Edit from LR4 into PSE10 not working

I'm pretty sure I have my LR4 settings correct, when I click edit in PSE10, PSE10 opens but no photo transfers over with it

Please ensure that PSE Editor exe is chosen as external editing app as shown in this screenshot-
If this is correct, which type of file are you sending for edit? Does that file open in PSE Editor when opened ouotside of LR?
Thanks
Andaleeb

Unflatten From String Not Functioning in Mobile Module 2011

Mobile Module does not get updated since version 2011. I am not sure my question will be solved.
I have been using Simple Messaging Reference Library (STM) for a couple of years. I use them in my Mobile Module code too. It has been working fine until lately I updated to the latest version of STM.
I noticed that 'Read Message (TCP).vi' was not functioning properly in the Mobile Module code. After a long debugging, I found the source of the problem. 'Unflattern From String.vi' does not work in Mobile Module any more. I did a test as shown above.
My questions are
1). 'Unflattern From String' was changed so it is not supported in Mobile Module 2011?
2) Why the same code worked before, but not now?
I use LabVIEW 2011 and Mobile Module 2011. Thanks.

MengHuiHanTang wrote:
Mobile Module does not get updated since version 2011. I am not sure my question will be solved.
I have been using Simple Messaging Reference Library (STM) for a couple of years. I use them in my Mobile Module code too. It has been working fine until lately I updated to the latest version of STM.
I noticed that 'Read Message (TCP).vi' was not functioning properly in the Mobile Module code. After a long debugging, I found the source of the problem. 'Unflattern From String.vi' does not work in Mobile Module any more. I did a test as shown above.
My questions are
1). 'Unflattern From String' was changed so it is not supported in Mobile Module 2011?
2) Why the same code worked before, but not now?
I use LabVIEW 2011 and Mobile Module 2011. Thanks.
Is that the real code or just a mockup to demonstrate the issue? I'm asking because the code is set up to run once and then wait until the stop button is pressed. Then the VI will complete and exit. Is the the desired behavior?
Bill
(Mid-Level minion.)
My support system ensures that I don't look totally incompetent.
Proud to say that I've progressed beyond knowing just enough to be dangerous. I now know enough to know that I have no clue about anything at all.

HT201210 trying to download an instal ios 7 on my iphone 4s, after half an hour into the download it came up with a message saying failed and everytime i try again the download doesnt start. tried downloading from itunes aswel but not working. anyone know

trying to download an instal ios 7 on my iphone 4s, after half an hour into the download it came up with a message saying failed and everytime i try again the download doesnt start. tried downloading from itunes aswel but not working. anyone know why?

The servers are overloaded. There are a hundred million people all trying to download iOS 7 at one time. Try again later

Whats happening internally within the unflatten from string function?

I am getting unflatten from string error intermitently in my program. I can't post the program to get help but essentially I am storing a GOOP object reference as a string. The reference is flattened to a string and stored upon creation, at a latter time the string is then unflatterned to retrieve the reference and then the data. This works most of the time but occansionaly the unflatterned from string function fails. Prior to passing the string to the function I am checking that the string isn't null. I am assuming something else is corrupting the string prior to passing to this fucntion and would like to know what would trigger the error in the function as it may help me realise what is happening
prior.
Cheers,
Wayne

Hi,
It really seems strange this problem, but one thing that might be the cause is how you store the flatten string. You do not mention that. I have once had problems when storing GOOP references as a sting and passing them between test VIs in TestStand using a string parameters in TestStand. A flatten string might have special chars that not all applications (such as TestStand parameters) can handle that and just trunkate the string when such a char is present, mistakenly inteprets that as end of string. Have you tried to check that string length is the same?
However to make sure you get rid of all problems with string termination, you really should cast your GOOP reference into something else. I would instead cast the reference to an U32, or
if you want, to solve the string problem for other types than GOOP reference, then flatten the type into string and then convert the string to an array of U8 before storing it. This would by sure solve your problem.
Regards,
Mattias Ericsson
Endevo
Sweden
Main developer of the new GOOP2 and GOOP Wizard 3.
PS! Have you seen that there is a new GOOP release that also may handle inheritance? Please check out: http://www.endevo.se/default.asp?lang=eng and click on "Products". There are examples, demos and white papers describing the new GOOP Inheritance Toolkit.
Attachments:
CastRefExample.vi ‏18 KB

How does "Unflatten From String" take a type and return a value of that type?

http://zone.ni.com/reference/en-XX/help/371361E-01/glang/unflatten_from_string/
How exactly does the "type" argument for "Unflatten From String" work? I need to create a VI that takes a type, passes it as an argument to several calls of the "Unflatten From String" function, and returns an array containing elements of the type originally passed. The "Unflatten From String" function seems to do some magic though, because the type of the "value" that it outputs changes depending on the type it is passed as input. How do I do the same magic in my VI?
Ultimately, what I need to accomplish is an unflatten-list operation. Given a type T and a byte string of length L (which contains a concatenation of T elements that are flattened to their bytes), create a VI that unflattens all the types in the string and return an array of length (L / sizeof(T)) that contains each type.
Note: performing the unflatten-list operation is trivial, but I cannot for the life of me figure out how to do it in a VI that takes a type and returns an array of the appropriate type. By the way, my data is being given to me from another source, so please don't bother suggesting that I should be flattening an array using LabVIEW's "Flatten To String" function in the first place. My data is not given in LabVIEW's array format: http://zone.ni.com/reference/en-XX/help/371361B-01/lvconcepts/flattened_data/
Thanks a ton!
-Wakka

Take a look at this example: You can see that the flattened string contains several bytes. The first four bytes contain the length of array (number of elements). Since the data type is U32, the next 32 bits (4 bytes) contains the value of the first element, and so on. Could you possibly use this scheme to do what you want to do? Other data types present different outputs. You would have to experiment with them.
- tbob
Inventor of the WORM Global

Unflatten from string takes long time to execute in x64

Hi All,
I am running into an issue where "Unflatten from String" is taking enormous amout of memory n time in LV 2012 SP1 x64 to execute. I pass in a NOT flattened string to this function and it consumes ~5 Gigs of memory and takes more than 10 minutes to execute it. On x86, it executes almost instantly.
It only happens if the input is not a flattened string.
Is this a known bug?
I have attached the vi here for you to see the problem. If you run it on x64, it might take more than 10 mins to execute and your system will be in a hung state.
Ritesh
Attachments:
Flat String to Data bug.vi ‏9 KB

LVCoder wrote:
With "x64" I meant LV x64. It executes instantly on LV x86 running on Win 64 bit but on LV x64 it takes like eternity.
I know it cannot unflatten it and I want it to return an error. My actual code can receive a flattened or NOT flattened string and I have a case structure which handles different strings differently.
Be careful with that terminology, it only applies to the Windows Operating System with respect to 32-bit and 64-bit processors. There is no such thing as LabVIEW x64, or LabVIEW x86. The property terminology is LabVIEW 32-bit (the most common one, most people use, even on 64-bit OS's since it is the most fully supported), and LabVIEW 64-bit (not commonly used, doesn't have full support of all add-on modules and toolkits, and is mainly only used by people who need LabVIEW to analyze very large datasets.)

Error 116 at Unflatten from string.....

Hi I want to save and load the control values of
the tab pages I am getting the following error
"Error 116 occurred at Unflatten From String
Unflatten or byte stream read operation
failed due to corrupt, unexpected, or truncated data."
the attached is the VI can
anyone tell me what is wrong ….thank you
Attachments:
save n load example.vi ‏70 KB

All that you need to do is right-click on the Read from Text File and Write to Text File functions and uncheck "Convert EOL".
Other comments:
You should not hard-code the path inside the VI. Either place a front panel control to specify the path (perhaps with a default value set), or generate the path so that it is relative to the VI (such as being in the same directory as the VI).
You are not wiring all your errors through so some errors can be lost.
You do not need to have the VI open a reference to itself. If you delete the Open VI Reference function the code will still work.

Bug in "Unflatten from String" (LV7)

I have binary files with different versions of a certain datatype. When loading a file, I try to unflatten the data using the newest dataversion. If I get an error, I try the 2nd newest dataversion and so on until I found the right datatype. This methode was ok up to LV6.01.
Now I updated to LV7.0ger and I found following bug:
When unflatting certain binary datas from string I get an error msg window "Nicht genügend Speicher zum Abschließen dieser Operation". The error-output of the vi is incorrect.
Does anybody know a workaround of that bug?
You can test the bug with the attached vi. Include also the two typedefs.
Attachments:
f_mancalib_UnflattenTypeCalibList.vi ‏184 KB
f_mancalib_TypeCalibrationParams.ctl ‏24 KB
f_mancalib_TypeCalibrationList.ctl ‏28 KB

Hi,
From the LV's help: "National Instruments recommends reworking any
application that uses the Convert 4.x Data mode as a long term solution.".
Data types may vary with differenct versions of LabVIEW. So, if types are
not the same, this does not need to be a bug. Right click the Unflatten From
String, and select Convert 4.x Data. This might not work, because the data
is stored with Lv 5 or 6, but when you get it working, it will keep working
for future versions of LV.
The attached VI shows that a sting in a cluster does not convert to the same
type string for lv4.x and lv7. Perhaps they are the same for lv4.x and lv6.
If so, using convert 4.x data would be sufficient. If not, you need to read
the data in 6, save the binary 4.x strings
, and use 4.x from then on.
You might also do the following: (also from the help) "If you use this
function to flatten data from a custom control or indicator that you saved
as a type definition, the function strips the type definition of its type
definition wrapper. If you do not want to strip this wrapper, right-click
the function and select Expose Typedefs from the shortcut menu."
Regards,
Wiebe.
"albertz" wrote in message
news:[email protected]..
I allready told this to a NI tech support in Germany. They told me,
the bug is known, but they do?nt have a workaround.
So I hope for LV7.1 or maybe LV7.01.
[Attachment Different Types.vi, see below]
Attachments:
Different_Types.vi ‏22 KB

HT201412 Safari could not open the page because the server stopped responding- new ipad mini's (2 from separate places) are not working with At & T router but computers work. Can you please help me. I've tried everything. Thanks ya'll!

Safari could not open the page on my new ipad mini's because the server stopped responding- new ipad mini's (2 from separate places) are not working with At & T router but computers work fine. Yesterday I got it to work. Weird. Can you please help me. I've tried everything. Thanks ya'll!

Hello SavannahSweetie,
I was looking into the issue you are desribing, and found a great article for troubleshooting wifi connections with iOS devices. It's called iOS: Troubleshooting Wi-Fi networks and connections and can be found here: http://support.apple.com/kb/ts1398.
Start with this section, and work your way down if needed.
Basic troubleshooting
Tap Settings > Wi-Fi and turn Wi-Fi off and then on again.
Verify that you are in range of your Wi-Fi router or base station.
Confirm that your Wi-Fi router and Cable/DSL modem are connected to power and turned on.
Check whether other devices (portable computers, for example) are able to connect to the Wi-Fi network and access the Internet.
Update your Wi-Fi router to the latest firmware.For AirPort Base Stations, refer to this article for information about firmware updates. For third-party Wi-Fi routers, check the manufacturer's website for details on updating your firmware.
Restart your iOS deviceHold the On/Off button until "slide to power off" appears. Slide to power off your device. When it is off, press the On/Off button to turn it back on.
All the best,
Sterling

How do I unflatten from string to an array of strings in labwindows

New to Labwindows so please forgive. I am trying to use STM to read messages from an existing LabView program. I am using ClientTCPCB from the example that came with the STM library, but it reads in doubles, I want to read in strings. I can see that I have the correct number of elements in my receive buffer, but I can't figure out how to convert the receive buffer into an array of char arrays (or strings as it were) something like labview's "unflatten from string" with 1-d array of strings as the type.

So I figured it out... from the lack of info on the web and forums I doubt it will be useful to anyone else, but will post a brief solution.
So I dumped the raw bytes to a file to look at how they are packed. The first 4 bytes (int) is the number of strings in the message. The next 4 bytes (int) are the number of chars that follow, then the corresponding chars, sans any null term character, then the very next int would be the number of chars in the next string and so on and so forth. So I ended up writing my own charArrUnflatten function. Anyway, after all this I might try to recode everything to use network vars. Cheers.

Error 74 Unflatten from String in video streaming using TCP

I am working on video streaming ( source: USB camera) using TCP. However, am constantly getting held up in "Unflatten from String" with Error 74 occuring stating "Memory corrupt". Kindly help me through in solving the issue.
Attached is the VI having both the send/ recieve together and communicating using localhost.
Attachments:
Image acquisition & transmit.vi ‏189 KB

Shoaib Akhtar wrote:
Thanks for the reply!
Restricting the TCP sent dta to two bytes was a mistake, that has been rectified.
However, we are unable to resolve the "Unflatten from String". their just doesn't seem to be any sub-VI or function, that I can find which could convert the string to IMAQ image!
Kindly help in the same!
Best.
Actually at least in earlier versions of IMAQ the normal Unflatten from string should be able to createthe IMAQ image when you transmit the right data. You can try that by writing the string from IMAQ Flatten.. to a file and reading it back and unflattening. If that works, you know you are making some errors in the TCP communication.
Message Edited by rolfk on 01-11-2010 08:37 AM
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Reopen All Windows from Last Session is not working

The option Reopen All Windows from Last Session is not working, is there any other way to recover the tabs from my last session?
Last night I fell asleep and my friend shut down my laptop.
When I woke up in the morning I couldn't restore my last session which had several tabs opened for my research.
I don't know the exact date when I found them, so I haven't been able to find them in History either.
I've looked around on the internet, but haven't been able to find anything that helped me out.
Hope you can help me! Thanks.

Restart your Mac.
Check the box for: Reopen windows when logging back in
Then check History > Reopen Windows from Last Session

CRIO: Unflatten from string into lvclass not working in deployment

Similar Messages

Maybe you are looking for