Hi,

The other day I was changing the assembly template because I updated the custom properties tab. Today, I have discovered that any time I make a mate with this new template, SW crashes. Also, the planes in the feature tree have disappeared.  I am sure that all I changed in the assembly template was the custom properties tab, and the old template is still working correctly, so I have no idea how this happened.

Steps:

     Open an existing assembly file

     Change custom properties reference

     Save as .asmdot

     Create drawing and make sure everything is working correctly

     I DID NOT actually make any mates that day with the new format

This is happening on all 3 of our computers, 2012 SP4.

Anyone else have this problem, or see a mistake in my method?