Need xfire to detect CF again!

A while ago, there was a minor error for some xfire users, where Xtrap had a problem with xfire. GM[Saidin] came up with a solution, and said go to tools > options > games then select CF, then put "never detect".

Now, I want to make some videos for crossfire, but I don't know how to make Xfire detect CF again! Is there any way to make this happen? Thanks!