as promised, i had another go at pi-align on my beloved old Mac running VPC.

it kept giving messages like "program attempted an illegal command" or something like that, then "general protection error, restart computer" which I did a few times, (well VPC anyway)

just about giving up, I opened one of the pid files in notepad to see if it had the require box info, which it didn't, just the spec info.

I then ran pi-align for a last time, and lo and behold,

IT WORKED !!!!!

gotta love dos, hey !!!

ps: please don't try to explain what happened, i don't think I want to know ;-))

TIA AG

ps, couple of bands are hiring the gamma pi boxes and LOVE them.

also, there is a simple variable piezo x-o diagram on my web page with a table of cap values if anyone is interested.