I think I have the same problem. It didn't occur to me that it was just the apps installed to the sd card. All of my apps are offical marketplace apps. Its just that most won't update. The updates seems to download but when it goes to install the updates the all fail. I've even tried unistalling some to reinstall them, but that's not working either. Besides, some of these apps i'd rather not unistall and lose my data. Any suggestions?
Tried it after clearing and rebooting, still doesn't work. But it is something with apps saved on the sd card. I moved one of my apps back to the phone and it updated with no problem. But its going to get annoying to update all my apps like that. I do thank you for your help though.
That was my next suggestion, but I thought if we tried a few things first we might be able to avoid it. Guess not, though. Hopefully this will straighten out for you, though, with a market update when it finally rolls out.
Sorry to hijack your thread here, but it was the closest to my problem and I didn't want to make a whole new thread. I'm kind of having the opposite problem.
So I have an app that I originally downloaded from the market and I also backed it up on my SD card. I guess for most people this app stopped working with the froyo update, although it kept working perfectly fine for me. The dev finally puts out a froyo update a few weeks ago and I updated it, only to find a lot of functionality that made it worthwhile was gone.
I uninstalled and re-installed the old backed up version from my SD card, but now every time I go in the market it shows that I need an update for it. I thought that if I was installing from the SD card, the market wouldn't recognize it, but apparently I was wrong. Is there any way to remove that app from the market. I've accidentally hit 'update all' a couple times and it's getting a little annoying. Any help is appreciated.