Audio Unit deactivated / FCPX 10.1.1 Install bug ?

Hey guys, here's what I get when I made the transition from FCPX 10.0.8 and launch the 10.1.1 (google translation, I use it in french):

'When checking the compatibility Audio Unit, Final Cut Pro has found 1 module (s) Audio Unit not approved by Apple. These modules will no longer be used by Final Cut Pro to avoid any possible problems or blockages.

Apple: AUNetSend'


I can't figure out where this stuff is ? I saw it's used to send audio trough the network and I've searched the library without finding it..I guess it's not a filename, but a protocol..

Anybody to help ? I don't want to update my (finished) projects, lost time to saw after that's it's a bargain..

I deleted Logic Pro days before (trough AppDelete), if it helps..

Thanks a lot!