When copying to NAS, "..an unexpected error occurred (error code -51)"

I'm using Mac OSX 10.6.8 on a macbook pro, copying files to a media NAS server via wifi (n), which I've done countless times before, for about 2 years.
In this last week or so, whenever I copy a file, be it 15 MB or 1.5 GB to the NAS, I've consistently been getting the error:
"The operation can’t be completed because an unexpected error occurred (error code -51)."
There's around 1 TB of free space on the NAS. Windows PCs can copy to it fine. I can still read from it fine, but copying to it is giving me a lot of trouble. I get the error message more often than not, but if I persist in trying to copy it will eventually allow me to copy whichever file I'm trying.
Size of files do no seem to be the issue.
Ive tried a suggested fix of Finder > Preferences > Sidebar > UNTICK Connected Servers ... this has not helped.
I've tried copying using PathFinder as well as Finder, both have the same issue.
I've looked into the Console messages but I'm not really sure what I'm supposed to find (bit of a mac newb for tech issues).
Could really use some help with this.. would be highly appreciative even for some good leads.
Thanks in advance!

Hi, see if this helps...
https://discussions.apple.com/message/7605861#7605861

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Error 8062 when I try to copy or move files on my macbook: "This operation could not be completed because an unexpected error occurred (error code -8062)". Can even not install new software now!!

Since a few days when I try to copy or move files on my macbook, I often get an error message saying "This operation could not be completed because an unexpected error occured (error code -8062)". And then it just quits the copy or move.
I searched a lot on the internet, but only found solutions for cases you cannot empty the trash due to this issue.
I tried those solutions for my trash and that helped after some trying.
However, I still have the problem with copying and moving files.
I even cannot install new software now, as it has to copy itself to the programs-directory, and gives the same error-message.
Who can help me??
Cannot seem to find any info on it on the support-forums or elsewhere.
My user-account is administrator, I use a 13" Macbook Aluminium (Late 2008). Mac OS X 10.6.8 CPU 2Ghz Intel Core Duo, RAM: 4GB 1067 MHz DDR3.
Any help would be greatly appreciated...
Otto

Tips I received so far (thanks to A-Mac via Twitter http://www.a-mac.nl and Remco Kalf http://www.remcokalf.nl/)
- make sure you have at least 10% of your harddisk in free space (I had only 5%).
- do a PRAM-reset (http://support.apple.com/kb/ht1379)
- perform a hardware test (http://support.apple.com/kb/HT1509)
- make a complete backup (with for example Carbone Clone Copier, see http://www.bombich.com/)
- after complete backup: use diskwarrior (boot from Diskwarrior DVD, first perform diagnostics, then perform "Rebuild" which rebuilds your file directory).
So far I only cleared up some space on my HD, and already the problem occurs less.
Still, I will go through the other tips too.
(will post progress)

I keep on getting this error when i try to copy files to my 2T Time Capsule, Please help im running out of space on my MacBook Pro.... The operation can't be completed because an unexpected error occurred (error code -50)

I keep on getting this error when i try to copy files to my 2T Time Capsule, Please help im running out of space on my MacBook Pro....
The operation can’t be completed because an unexpected error occurred (error code -50)

I would get an external drive today and copy all your stuff off the TC.. forget trying to load more onto it. There is a good chance after 3years (A 2TB should be only about 2years tops), the disk or the TC itself is on the way out. Do it immediately. If TM is also failing to backup you need to recognise symtoms of impending doom.
Unfortunately the error messages are archane and it is hard to discover their meaning.
You also cannot verify a network drive.. you can verify the TM sparsebundle though so do that.
A5. http://pondini.org/TM/Troubleshooting.html
Reboot the whole network from off.. certainly if you run later OS it can simply lose the drive..
If you still fail to be able to copy to the TC.. then get that external and copy off it. Tell us if you can do that.

I get this message "The operation can't be completed because an unexpected error occurred (error code -50)" when I try and add any files to my Time Capsule

I get this message "The operation can’t be completed because an unexpected error occurred (error code -50)" when I try and add or delete any files to my Time Capsule. It just started happening a week ago.

I would get an external drive today and copy all your stuff off the TC.. forget trying to load more onto it. There is a good chance after 3years (A 2TB should be only about 2years tops), the disk or the TC itself is on the way out. Do it immediately. If TM is also failing to backup you need to recognise symtoms of impending doom.
Unfortunately the error messages are archane and it is hard to discover their meaning.
You also cannot verify a network drive.. you can verify the TM sparsebundle though so do that.
A5. http://pondini.org/TM/Troubleshooting.html
Reboot the whole network from off.. certainly if you run later OS it can simply lose the drive..
If you still fail to be able to copy to the TC.. then get that external and copy off it. Tell us if you can do that.

An unexpected error occurred (error code -50) when saving to ext HD.

I have an external USB Raid configured 2x3T config for a total of 3T of storage. It was working fine and now when I try to save to the hard drive I get: The operation can’t be completed. An unexpected error occurred (error code -50). Any suggestions? I have reset the PRAM, ran disk utility, restarted the computer, restarted the hard drive etc with no luck. Any suggestions would be appreciated because I cannot find any help on the internet.

Hello,
enum {
paramErr = -50, /*error in user parameter list*/
Not too helpful by itself, but can mean an unacceptable character in a filename like...
? / \\ < > " | > *
when copying to a FAT32 formatted drive or using SMB for file transfer. Can also be a Permissions problem, usually on the receiving end, & in the old days could happen if a file had forks...
http://support.apple.com/kb/TA20831
If using Time Machine...
Error -50...
http://pondini.org/TM/C10.html
Have you looked through Pondini's extensive TM help site?
http://Pondini.org/TM/FAQ.html
I can't imagine anything TMwise not covered.

When trying to empty trash, (securely or not), I get this: The operation can't be completed because an unexpected error occurred (error code -8003).

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Have you read for possible solutions over in the "More Like This" thread over here?----------------------->

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When I try to move files from my imac (v10.8.5) to my external harddrive I get the error message "The operation can’t be completed because an unexpected error occurred (error code -50)." How can I resolve this? Thank you.

Some other things to look at.
https://www.google.com/search?btnG=1&pws=0&q=The+operation+cannot+be+completed+b ecause+an+unexpected+error+occurred+(error+code+-50

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The permissions are fine, and I have trashed the finder plist and reset the NVRAM.
Anyone have a answer?
Thanks

Tips I received so far (thanks to A-Mac via Twitter http://www.a-mac.nl and Remco Kalf http://www.remcokalf.nl/)
- make sure you have at least 10% of your harddisk in free space (I had only 5%).
- do a PRAM-reset (http://support.apple.com/kb/ht1379)
- perform a hardware test (http://support.apple.com/kb/HT1509)
- make a complete backup (with for example Carbone Clone Copier, see http://www.bombich.com/)
- after complete backup: use diskwarrior (boot from Diskwarrior DVD, first perform diagnostics, then perform "Rebuild" which rebuilds your file directory).
So far I only cleared up some space on my HD, and already the problem occurs less.
Still, I will go through the other tips too.
(will post progress)

The operation can't be completed because an unexped error occurred (error code-50). This appears when I'm copying a file to the drive and then I wasn't able to edit to my drive. Then this morning I can't open my project file. What to do?

Message: The operation can't be completed because an unexped error occurred (error code-50).
This appears when I'm copying a file to the drive and then I wasn't able to edit to my drive.
Then this morning I can't open my project file. I get this message: The project appears to be damaged, it cannot be opened.
What should I do!??
I have moved my project onto 2 different external hard-drives now.

Hi There,
After looking around for this error, it seems to be related to OS, we would recommend you to contact Apple support for this.
Thanks,
Atul Saini

"An unexpected error occurred (error code -43)" when launching Time Machine

Hi! When attempting to launch Time Machine, I get the following error:
The operation could not be completed
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My machine is a 2.8 GHz Quad-Core Intel Xeon running 10.5.8
What's strange is that Time Machine DID work just the other day. It would launch automatically when I plugged in my external HD (Maxtor One Touch) though I didn't set it up to back up yet. After I reformatted the drive to Mac OS Extended (Journaled), Time Machine started giving me this error and won't launch. Any ideas here? Thanks!

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Thaks,

This often means the backup is corrupted.
First of all reboot the network.. turn everything off and restart in order.. modem.. TC.. clients.
If you still have issues, hold the option key when you click the Time Machine icon on the top menu and it will bring up verify backups.
Do that.
Read this thread if you need more..
https://discussions.apple.com/thread/3123920?tstart=0
It seems to be a fairly complex problem if the above don't work.

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Piggywiggle

The operation can't be completed because an unexpected error occurred (error code -50)

I have a Seagate Central 3tb NAS (latest firmware) attached to my wireless router (Netgear wndr3400v3). I have a late 2011 macbook pro with Yosemite on it. When I go through finder to use my NAS I keep getting "The operation can’t be completed because an unexpected error occurred (error code -50)" . I only get it when I am trying to copy a big folder with other folders and files with in. I can copy a single file or create folders. If i try to copy a folder with 100 pics in it then I get the error. I can create the folder on the NAS and select all 100 files. When I drag them to the NAS, then they copy with no problems. Every so often my time machine has an error and says that it has to create a new backup. I read some where to make sure that "put hard disk to sleep when possible" should be selected in the energy saver in preferences. Still no luck. A can also drag any file from the NAS back to my laptop or view them from the NAS with no problems.
Thanks for any help in advance.
Billy

Hi there,
Well I have exactly the same problem! Recently I reset my WD My book White light (2 x 1TB RAID disk), due to the fact that the disk ran full because of TimeMachine.
I reset the disk, and now I can only write some files to it, but most give this error code.
I wrote to WD, but they could not give an answer.
Q: did you update the firmware? Maybe that is causing the problem, in that it is maybe not consistant in the filesystem?

HT201250 i'm getting message: can't be opened because you don't have permission to see its contents. and he operation can't be completed because an unexpected error occurred (error code -8003).

I took my computer in to have the Backup restored onto my computer after having a new harddrive put onto my 1year 1/2 old MacBook Pro. When i got it home there was a new User that i had to logout of to getting into my normal user. Don't know why this was, just figured the Mac guys that installed my backup did this for some odd reason. Today i could not open any of my files in the backup on the time machine. All the folder had line going thought them and when i clicked on them I revieved this message: can’t be opened because you don’t have permission to see its contents. After talking with that same mac store. I decided to just delete all the files out of the time machine as it was just put back on my computer and i have everything i need. Hours later when i tried to empty the trash i got this messsage: the operation can’t be completed because an unexpected error occurred (error code -8003).
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thanks in advance

While you see a single trash can, in reality there are trash folders on each mounted volume. I don't use TM but what you are describing implies that a TM drive is no different with the way trash is treated. So when the TM is unmounted the trash folder on there is gone and thus the trash looks empty. Remount the drive, the trash folder on it now causes the trashcan to look like something is in it.
If TrashIt! could not remove the file, I'm sorry, you will need to use the terminal. We can do this one step at a time so you only have to copy/paste the lines into terminal (except the first time). So launch Terminal (in utilities). You might want to make the window that is shown a bit larger with the grow box since it's pretty small.
This first line is the only exception to the copy/pasting since you have to enter some information.
sudo ls -laR /Volumes/your-TM-volume-name/.Trashes
where your-TM-volume-name is the name of your TM volume. That's the part you have to fill in since I don't know it.
When you hit return the sudo in that command will cause a prompt for your admin password. Enter it and hit return again. Note the password will not be shown as you type it. Post the results so I can tell you what to do next.
Note this ls command is not doing anything but listing the files in the TM's .Trashes folder. Remember I said each drive has it's own trash folder. .Trashes is it.

When copying to NAS, "..an unexpected error occurred (error code -51)"

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