Ron, thank you for all the excellent information!

Andrew has gotten involved with the problem and he seems to confirm much of what I have been thinking about the nature of the problem and the probability that it is just not unique to my computer. I have also gotten input from several very helpful people, like yourself, on the forums for PG Music and Cakewalk.

I am using RB as a straight sequencer. All the files I am having trouble with either have actual bank changes or some entry in the MSB and/or LSB columns displayed in the Classic Tracks view, even if there are no actual bank changes in the file. Removing those apparently superfluous entries in the MSB and/or LSB columns seems to allow TTS to play files that have a GS reset in the SysEx msg correctly. Files that have a GM reset appear to be a unique problem that I have not been able to work around yet - however, those files do play correctly using the midi mapper rather than TTS.

I have noted too that the TTS works fine in the few files I have produced with castanet sounds using MSB 121. So that makes me think that the people on the Cakewalk forum are correct when they say that they believe the TTS is fully capable of correctly handling all properly entered bank changes. I speculate that improperly entered or partially entered bank change information may be involved in the problems I am finding.

Ron, I am going to print your msg and go over all the helpful information more carefully. I know it is going to help me. And I thank you so much for taking you time to provide it to me. Scott