Anyone else had an issue with the Sage 50 client crashing with a null index error?

One of my bookkeepers reports that she had her client crash with null pointer error. Looking at the server, found a 0xC0000005 error for the zenengrsvr32.exe . 

She couldn't quit Sage or navigate off the page she was on. Rebooted her workstation couldn't reconnect to the db. 

Restarted the server and she got back in with no further errors  -- the record that she had attempted to open came up with no issues.

Seems a bit odd to me. This is the latest build just installed night before last. 

Thoughts?