Analogue-sequencer

I'm trying to backup my P3 data into SysEx and am having a problem
getting the program to capture the data.

Capturing the P3 dump worked for me last weekend and I used the SysEx
program to update my firmware last night, so connections and
transmissions seem to be ok.

Any helpful hints anyone can throw at me would be appreciated.

BTW, I'm using SysEx v4.8.0 on a Mac on OS9.1

-Jim