Sorry I've been out of the loop for a while. I tested the demo project on my system many times and have found no issues with the demo when using R236 beta.
I tried leaving the demo running for long periods of time, short periods, without network connection etc but it has so far worked every time.
I think it's a matter of continuing to test and try to hone in on the specific circumstances that the load fails before we can report a new bug.
It doesn't seem to be 'exactly' the same bug as before even if the outcome (the file failing to load) is the same.