[slpintern]

I had this problem and put the solution under a different post called "Sprint PictureMail" since that is how I learned of it.....Copied and Pasted from that thread below is what fixed it on my phone and have had no problems since....

FIXED! So here was the issue: I had to use command prompt to reformat internal storage. I could send PictureMail but could not receive it due to my phone no longer seeing the Internal Storage as a internal storage drive and rather just a folder. After I went into command prompt and "format e:" on my computer (e: of course being the drive that my phone shows up as when I connect it to my computer) it formatted properly. Using File Explorer I copied the contents of the Internal Storage folder into the new correct Internal Storage2 DRIVE (has a little icon of a disk on the folder) and then deleted the original Internal Storage folder. Soft-Reset and the folder will be gone and the Internal Storage2 Drive will now be the proper Internal Storage Drive (named properly without the "2" at the end). Now I can send and receive pictures as normal. Hopefully this message helps anyone with the issue as I have heard a lot of people had it.