When I try to run the MIDI wizard on Win8/64 +BIAB 2012.5 I get the following error:

Access violation at address 73CAD4A7
in WINMBASE.dll
Read address of 0000FFD4 at 73CAD4A&

Has MS punted GMwavetable MIDI or what is needed to make BIAB+Win8/64 play nicely?

It worked fine on Win7/64!

TIA.
Dave Nuttall
San Antonio, TX