Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Please be more specific... installing? Running? Error messages? What's it do? What doesn't it do? Have you tried powering-off, then on?
Go to settings- > Applications- > Manage Applications- > Market- >
Check/clear cache. Reboot and try again.
Also make sure your background data is enabled.
Well, that's an interesting fix. I wonder how the SD card could have interfered with the installation of an app -- especially if you cleared the cache (which I think lives on the card).
Did you copy all the files on the card off somewhere, format the card, then copy them back -- or did you just format?