Cannot extract articles into RTFM

Hi,

I have RT 3.6.4 and RTFM 2.2.0 RC5.
When I want to extract an article, the little drop-down boxes supposed
to let you pick different parts of the message just show a “-” and don’t
let me select anything.

rt.log doesn’t show anything.

Is there a way to debug this?

Best Regards,
Rainer