5.1 build 624 - Hotfix

Bugfixes
Fixed an infinite loop in the error handling code when an Exception had a cause (most exceptions)
There was an infinite loop in the error handling code that has been causing high CPU usage and OutOfMemory crashes.
The loop prevented the actual exception from being logged, and was a very dumb mistake in the code, that is easy to miss.
I should have originally written some unit tests, but at least they are here now, and the error handling code is confirmed to work properly.