Application can not open

Question

I just bought a ipod touch 8G.At first I use it download application.It works.But when I sync itunes.All application dose not work any more.When you open it then back to desk.I call apple hotline.They told me authorize computer and reset your ipod touch...I did it.But still dose not work.HELP

Answer 1

My iPod touch is less than 24 hours old.
I loaded the Facebook app and it worked without any problems. Next, I installed Bejeweled 2, Pandora, & Convert ~ the unit calculator. None of them worked. They would open for a half a second then close. Eventually, the Facebook app stopped working too.
I started combing the Internet for answers and everybody was saying the same things. I tried the following:
1) Deleting and resyncing my apps through iTunes -- didn't work
2) Deleting and reinstalling (from the web through my iPod touch) -- didn't work
3) Deauthorizing and reauthorizing my computer -- didn't work
4) Deauthorizing and reauthorizing my computer and deleting then resyncing apps -- didn't work
5) Deauthorizing and reauthorizing my computer and deleting and reinstalling my apps -- didn't work
6) Deleting and reinstalling apps one at a time in case one app was messing all of them up -- didn't work
....At this point, I found the suggestion here about resetting to factory defaults and tried....
7) "Erase All Content and Settings" via Settings/General/Reset -- didn't work
But, it was through this last option that I finally got things working again. There are a few different ways to proceed with option 7. You can do a complete reset, then iTunes will ask if you want to set up your iPod touch as a new device or use the setup from the first time. My results were:
8) Did step 7 then set up as old and resynced apps -- didn't work
...I unchecked all apps in iTunes, then...
9) Did step 7 then set up as old and resynced but with no apps selected, then installed one app -- WORKED! Installed more apps -- Didn't work (and now the first app wouldn't work either)
8) Did step 7 then set up as NEW device and resynced from old setup -- MIGHT HAVED WORKED... read on.
Near the end of this process, I tried a few different setup options and I'm not clear on which one worked. I had begun suspecting that only apps that were tested on an iPod touch are the only ones that were working. As I explored a few variations on resetting and resyncing, it finally worked but I'm not sure which combo actually worked. Although, I know for sure that resetting to factory defaults and setting up as a new device was part of the process. Also, I think I started adding the apps again one at a time, testing and adding each one until after the first 3 worked, then I think I resynced all of them (maybe 6) and they all worked.
Since then, I've installed several others and I'm not having any trouble at all.
I gotta say, I love my iPods. Apple is pretty creative and they're innovators. But they are NOT good at solving problems when a situation comes up where so many people are having the same problem and looking for answers and you never see any posts by Apple with the solution. When someone actually calls Apple for support, I've never read about a successful solution being given by support.
I hope this helps you solve your problem. If it does, please respond here so other people know. Also, copy and paste a description of what worked and share it elsewhere.
Good Luck!
Scott