Hi James, I'm using the version you posted with the "b" postfix, it is the revised one. Builds are error free and warning free, with no forced message/error suppresion.The error is triggered when I load mach3.exe from the desktop shortcut after the plugin dll has been compiled and copied to the plugins folder of Mach3. The "Found Mach window" is the message just b4 the error in DBview. The ID address is in hex, so I will have to check which one it is, I didn't have time to check it. Thanks for the reply.
Whacko