-Billy- on "A corrupt configuration file was detected"

Hello,

I don't edited recently my gallery and now I find this message "A corrupt configuration file was detected. You should remove or repair the file and re-run setup."

I already deleted and upload again the folder zp-core but this message is always online and my gallery is not available : http://www.t-u-f.net/galeries

What's happened ? How I can resolve this problem and avoiding to remove and reinstall all the folders ? I don't want to lose all my titles of pictures, I have more 5000 pictures :-(

Thanks for your help !