thanks for your quick reply. In the meantime, I have installed DVC3 beta V26.01.2012, converted one fixture into the ssl2-format and imported the related scenes. That works fine…

What I have forgotten in my previous mail: Windows XP PROFESSIONAL SP3 etc.
DirectX Version: 9.0c Build 4.09.0000.0904
Now I have made a quick test:
Point 1) Exactly the same behavior.
Point 2) Because that seems to be a stochastic failure, it is hard to give a professional opinion on that topic, but in the moment I “feel” that the interaction in DVC3 beta is slightly better. For example, the pausing/restarting/stopping of playback does not crash the AudioAnalyzer, but starting Media Player AFTER the AudioAnalyzer keeps it still crashing. What I can observe is that first the graphical BPM display stops updating and then it shut down with the well-known Windows error message.
Point 3) Exactly the same behavior.
Greetings
Kleinolli24