Problems with opening apps and playing videos

Question

This may seem long but I'm only trying to state all the facts so I don't miss anything that someone can help me with
PLEASE HELP ME!!
About a month ago I got a new ipod touch, with the 2.1.1 or whatever software. I haven't upgraded it.
I first spent hours putting music on, then added applications.
Both music and applications worked.
Then I put on a movie and 5 music videos.
The videos/movie all worked but the apps wouldn't open.
I checked online for app upgrades, none available.
I tried deleting the apps from both the ipod and my itunes, then rebought them and replaced them on my ipod. Didn't work.
Music still worked. Then the videos stopped working. No videos/no apps.
Then I tried restoring, all that jazz that these forums recommended. I restored to factory settings, nothing seemed to work until I erased everything (somewhere in settings on the ipod it says you can erase the drive and it takes about an hour) and after that, started over.
Put the music on, worked.
Put the apps on first, they worked.
Put the videos on, they worked.
Didn't turn the ipod off for three weeks in fear that if I had to restart it, nothing would work again.
Tried to add another app AFTER the movies were the last thing I added, and when the app wouldn't work, I deleted it from both the ipod and my itunes.
Then I tried to start the other apps, they work.
PROBLEM is that my movies/videos don't work now! It says "Cannot play this video."
What the ****. I read before something about the mpeg4 format of movies not allowing apps to open up, but this time I tried to add an app and it wouldn't play the movie. I guess a lot of people are having this problem? Anyone have any new suggestions before I have to erase EVERYTHING, AGAIN from my ipod??
Thanks!!

Answer 1

Hi, here's an update I just posted on another thread on the same issue:
Okay, update from my end.
I did a restore of my Touch. When I restored, I had the choice of "set up as new iPod" or restore from my old iPod Touch. When I clicked on my old iPod name, and hit the scroll arrow to the side, it opened and there were 4 options; previous back ups. I chose my iPod name from August 8, 2009 and restored using that.
After the restore, sync, etc., all music videos & apps are reloaded, working, and my software is 3.1.2.
So, I can't say why the apps & videos wouldn't open after working for several months, but as others have suggested, try restore. However, when given the choice to "set up as new iPod" in iTunes or restore to your previous, click on the scroll where your old iPod is listed, see how many you may have in the history, and pick one a couple months back.
Hopefully this will help some of you out there.