Hi Tweakie,
Thanks for the offer to help. I've been running Mach3 with Windows7 sense I built this diy wooden cnc in 2010. Most of the time it will run fine but once in a while I get the 'error triggered' code. Yesterday I ran for over seven hours and the error code only came up one time. Fortunately it was not in a critical spot and I was able to reset the machine and work coordinates and do a 'Start from here' and continual the cut. I have learned to make a very fine line mark in the center of the work to reset the X & Y zero for the work coordinates. But the coordinates will still be off by a few thousands and it make it hard to do a 'Start from here'. The piece of 3/4" aluminum (12"x48") I was cutting is too big for my table (24"x42") and has to be moved over to make all of the cuts.
Tweakie, Thanks again,
Gene