Yes, there is a known incompatibility between the CSMIO-IP/M plug-in and the latest versions of Mach3. I am running a slightly older version of Mach3 to avoid the problems which stopped my tool-height setting macros from running correctly. Over the last year or two I have been starting to find one or two other issues which I am still trying to understand but which seemed to arrive when I started using the MPG. Your "jogging" problem is one that I noticed recently but because I do not use the feature I was not sure if it was a real problem or that I had forgotten how the facility worked! I have to say that I do like my MPG and it is always in use for any job I am doing.