How do mass delete all copied games from arcade

[Error47]

Please help me on this. I just installed about 350 games, and I think about 50 of them are the same but copies. I might have uploaded the same files twice or something, but it's a real problem and it would take me hours to delete them one by one. Can I do this from the ACP or even an FTP program? plz help

Thanks.

 

[Grinderhand]

Nope, no mass uninstall. One at a time. Installing 300 at a time wasn't such a good idea, was it?

 

[Error47]

No it was not, now I need a day to delete the dupes.