I've had problems with the Event Flow Debugger hanging or freezing when recording events. Typically it was due to a high volume of long lived events. I would suggest 2 things to try:
1. Pair down your queries to the bare minimum and try recording again.
2. Record the events using trace.cmd from the command line. Then open the resulting *.etl file with the Event Flow Debugger. The details for how to use trace.cmd can be found here: Using
the StreamInsight Event Flow Debugger