I have MidiShare only partially working on my Windows 7 64-bit system. My MIDI
interface is the MOTU Midi Express 128. My device shows up in the MidiShare
utilities port assignment tools, and my software appears to run without error.
However, none of the MIDI port activity lights flash and no MIDI signals
actually go anywhere. Before I tear out any more hair trying to debug this
situation, are there any known problems addressing devices when using
MidiShare on 64 bit systems?

More info: msControl32.exe will not open a window on the Windows 7 desktop,
though it shows activity in the taskbar.
msDrivers.exe runs and remembers patch settings. But nothing actually goes out
through the MOTU Midi express 128, however. No MIDI signals ever go anywhere.
None of the MidiShare client apps give any errors of any kind.

The MIDI interface is USB. The drivers are 64 bit, and I can't replace them
with 32 bit ones because the installer does it all automatically.