Cannot add new tracks to the library, using the top menu or ctrl-insert, as soon as I try the software becomes unresponsive and have to use "task manager" to exit, I am using version 12.4.14760.0 and MSSQL 2016
Can you try to add a single folder wth just a few files to see if it helps?
Also will you get the same behavior with a Sql Server Compact database?
We have tried to reproduce this behavior on three different machines, unfortunately with no luck. The adding starts and works as it should.
I would suggest you to try a clean install as described here:
If the issue remains after you have performed a clean install, please open a support ticket at http://support.imploded.com and we can assist you further.
Good to hear that it got resolved. Thanks for the update.