The test builds worked fine (where you added the registers), but not the latest release 188.8.131.52. It crashes with 'on by default' exploit protection system settings. But not in the same way it did before. Before the program failed to even open. Now it opens then crashes.
I have strict security exploit protection settings. That is what caused the crashing last year. If I disable all exploit protections, it still crashes.
Thank you for reporting this issue and sending the additional information. It's likely that the problem is in the code that handles taskbar integration. We fixed some issues with it found in version 7.1, but it looks like it introduced a new issue that you are experiencing.
To confirm this theory we have compiled version 7.1.1 with taskbar code from 7.1. Please try the new build and let us know how it works.