Graeme, As always, you were right. I took those quotes around the path string and that took care of the RegisterProcess error. > The problem is the quotes around the path string. This prevents > the ~ being expanded to your home directory, and it seems that > on some versions of OS X the presence of a ~ causes the RegisterProcess > failed error (perhaps this is a result of increased parameter checking > to increase security against malicious software). Simply removing the > quotes would fix the problem. > > (Apples error message makes it hard to diagnose the cause). > > Graeme Gill. Roger Breton