Andrew,

Thanks for your suggestions. Here is what I've learned:

1. When I remove these default*.tgs files, I don't have any problem in the DXi Synth Settings dialog - The computer responsiveness is just fine.
2. As soon as I select the Edirol VSC, the system comes to a crawl until I can't do anything. Again, this only happens when JAWS is running and the Edirol is selected (not when JAWS is turned off).
3. If I select "none" in all of the drop-down combos in that dialog, again, there is no problem with responsiveness.

Thus, I think the problem has to do somehow with a strange interaction between JAWS and the Edirol synth.

Any dieas? I'll try sending this to the JAWS support site - Perhaps they can reproduce the problem.

At least once I choose this synth BIAB playback works fine for playing tunes, I just can't use this dialog with the Edirol selected.

Thanks again.

-- Pete