I have a handle on what my problem is; I was programming my arcs in incremental while the machine is set to absolute. it seems I have always programmed in incremental never knowing there was a difference until all of a sudden it wasn't working anymore! Also NCplot has a place in the machine configuration to check "Absoltue Arc Centers" which leads me to my next question:
I wrote a script to convert incremental arcs into absolute but it stops running I think because the absolute arc centers check is in the wrong position during execution.
Is there a way to access Absolute Arc Centers check block with my script?
Also can I change from lathe radius to lathe diameter the same way?