closing EN X1.01 gives error report


We recently upgraded to EN X1.01 and merged multiple libraries into one creating a giant library with 70+ groups and 40K+ references. Since we have done this we have encountered multiple malfunctions of our system resulting in uninstalling followed by reinstalling the program multiple times. Now, when we try to close EN X1.01 an error message is given that “the program is not responding, would you like to send an error message.” While EN was still open it seemed to be working fine until we try to close it which does indicate that not everything was working.

First off, does anyone else have this problem as we have encountered it on multiple systems? 

Secondly, does anyone know of why this is happening and what the implications are for changes that are made within EN (i.e. adding references) or for CWYW?

Thank you very much,