[Black Tiger]

I got a problem. I moved my site from servers and uploaded all the files which already were in Downloads II via FTP with the according numbers in the filename like: 15567-arioner.zip
There was a problem downloading via the site so my provider activated php-suexec and now downloads are possible but another error occurs.
When downloading files via the site, the zip and rar files have errors or a map in a rar file shows as a file.
When downloading via ftp however, the file comes in correctly.

So something must be wrong but I don't know what.
Files imported and uploaded either with ftp or via the web can be downloaded without problems.

So it looks as if the files which were already present before the server move, can't be downloaded without errors anymore. Is there a fix for this?
Did I forget something or did something wrong?

Edit: Just discovered another thing when clicking in the ACP on import, it says:
The absolute path to this script is /home/mydomain/domains/mydomain.org/public_html/bbs/admincp/
It should be /home/mydomain/public_html/bbs/admincp but i don't know where to change that.
Re-imported the downloads II product but that did not change anything... help?