hi i've ver3.043.066 running a laser, it does perfect but at exiting the mach crashs, no matter no problem just maintenance hours will be lost (essential for my job) , i save these at end of each session manual.
are there others with the same problem?

No problems here but I have reverted to using version 3.043.056.

Could you explain a bit more about "it does perfect but at exiting the mach crashes" how do you exit ?

Tweakie.

sorry about wrong place
i means i've no problem during running a job and when it finishes and i close mach, a window reports an error occurred (in fact mach3 doesn't exit properly)and i lose maintenance hours data.
this happens for sessions which takes more than hour and so

Apologies, my poor choice of words. By 'no problems here' I meant that I have no problems with my setup of using Mach3 to control my laser. 

Perhaps try using an earlier version of Mach3 (some have reported having problems with ver. 066, although not with lasers). Earlier versions can be downloaded from ftp downloads tab http://www.machsupport.com/software/downloads-updates/

As said I now use ver. 056 and this is just fine for me.

Hope this helps.

Tweakie.