I am clueless but I need help with PS3

The problem I am having seems to be a little different from everyone elses in regard to PS3 game saves.

I am trying to unlock the free mode in Sonic for PS3. I have used Xploder to copy the gamesave to my PS3 and I can access the gamesave in my PS3 Data Utility menu but it says the file is corrupted.

I did get the new update to version 3.55 but that was before I found this site so perhapes that is the root of my problem. Or is it the whole issue with my PSN not matching the PSN of the cheat save? Or is it because I live in UK and there are only US and EU versions of cheat saves? Sorry for this....

EU saves will work on UK games as UK games are what they call the EU versions, it could be linked to a console ID which makes them harder to copy as some saves use copy protection to stop people using downloaded saves for trophies etc.