Will not complete the carve

Just installed the update 3.18. Haven’t had a problem before this. don’t know if that’s the problem. Will not complete the carve. fist time was 90%. I did it again with same xyz and it went about 15%. Both times it went back to xyz start setting and did not ask if it was completed ok or not. No problem with internet it just acted like it had completed the cut. any one else having problems with update or is some other problem I should look for. I was using 1st day out of four using Pro.everything looks ok in the program and shows the right hand page path to completion with everything done. Help.

Your symptoms strongly suggest USB drop-out.

Reason for that can be a multittude of things - here is a thread covering the basics: