Tried to help and when I hit the "settings" button in the BIAB-VST, Reaper crashed.
Others are reporting the the VST3 is a problem in current BIAB-VST with multiple DAWs. I would suggest you try the VST2 - except.... I was just running Reaper with the BIAB-VST3 and it was working fine. Then when I tried to reproduce you report, it crashed as soon as I hit the "settings" button.

Sorry, not much else I can suggest at this time other than to suggest the menus and windows which open in the BIAB-VST should remember where and on which monitor they were saved.


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