Problems with videos

[RobDog1183]

I am having a problem with my psp. I have a 4 gig that i put all sorts of thing on, music, my movie rips, my backup iso's, and emu's. Well I just bought another 4 gig and evrytime i try to put a movie or even a vid clip on it with psp video 9, after the transfer is complete it says "File In Use" under the vid on psp. Then when I disconnect the psp the file is corrupted. I also just coverted the videos with psp video 9 then transferred them manually, but all the vids still say corrupted. I can put my backup iso's and some music still. Anyone have any idea why this is happening?

EDIT: MODS PLEASE CLOSE, I MADE SAME THREAD IN VID SECTION. SORRY.