I would like to ask you to post the complete syslog file, so we can have a look into.
it seems there is an issue when the property Use Standard path between Rotary Motions is switched to "ON"...
During each movement the mom_prev_tool_axis and mom_tool_axis is asking for changes of the vector, but in last movement the post try to get the vector of the ref_axis and post fails. Thanks for pointing that and we will investigate it and deliver a solution. In the meantime you can switch off that property and you get an output.
Let me know if that firstly works for you.
Your solution fixes problem right away, thank you for your response.
I've also overcome this issue by creating a new geometry. Problem was somehow specific to only enlarge surface command in my case.
Its my duty to report such cases in order to expect stable products.