Uploading PSP Savedata

I am trying to upload a .zip package for psp savedata and when i fill in all the required fields to do so i click upload, then...unable to move file pops up?? My .zip package has a readme.txt and the psp savedata folder. I name my .zip packeges to the name of the game. I tried moving the zip package in a different location on my computer to upload it and still unable to move file. Please Help, i have saved data for games that dont have any!!

Try re-zipping it I guess..

I haven't uploaded anything since Megaman