[goodfella]

I am able to save/install/open programs, pictures, files etc. on my 4gb card. I am able to view the remaining storage and everything looks fine.

Here's the problem. When I go to the sprint music store and click on download, all of a sudden I get an error message that says it cannot locate my storage card. I did initially run the music store on the 512mb card that came with it, which shouldn't make a difference.

Has anyone else experienced this or possibly been successful using your 4gb card at the music store?