Manufacturing Lead Time Calculation

We’re trying to run Manufacturing Lead Time Calculation and are getting an error.
“RunTask: Object reference not set to an instance of an object.”

I checked the logs and it seems to be failing while adjusting an assembly that has a phantom assembly on it. Has anyone ran across this before?

Have you tried running the process by just that assembly?
or just the phantom assembly?

I haven’t received that exact error but it seems like I’m getting more errors now in E10 than used to in E9. Those errors don’t have many specifics either (at least not that I can easily understand).

Like you, I look in the log for the last part number that tried to process Mfg Lead Time - and eventually will find the source of the error somewhere in it’s methods or related planning settings.
I find it it has helped to run the process for the specific part(s) that were failing.

I will be interested to hear what you find out.