WGM Crashing upon adding new user

Hey all – ran into a problem, trying to add a few hundred user accounts (by hand) to afresh install of 10.3.5. We had several people doing this from several workstations…

We got up to about 250 users, and now when we try to add a new user, WGM crashes. We can launch it, and seemingly edit, change passwords, etc. But creating a new user causes the app to crash.

This happens on all workstations, even ones that were not used to add users in the first place.

Any ideas on if something got corrupted somewhere that can be simply replaced, or are we hosed?

As I said, the server still lets people authenticate, etc so the (standalone) server seems to be working.

Thanks for any tips!

Bill