Hello,

 I had a old C10 board and sold all the components but an still using the old windows XP with mach 3 version R3.043.066.  Now i just purchased a USB BOB and looking for the settings. I am still using the old windows XP system. Every time I go to motor turning tab and mess with the settings says ERROR FOUND, Art Code 9991, Attempt recovery. Error triggered . I click yes and nothing, I click No and the program crashes.

Any help would be much appreciated.

There are known issues with Mach3 version .066.

Make a secure backup copy of your Mach3 folder (just in case), download Mach3 from the Artsoft website and install over the top of you existing version.  https://www.machsupport.com/downloads-updates/main-programs/

Tweakie.

Thank you.