I recently had a crash that deleted my entire project for the most part (scenes only)/
When the crash happened it was linking to bolt.core so it was related to bolt and not so much Unity.
I have not been able to replicate the issue, so it could have just been a 1 time thing but because it basically killed my project I'm not comfortable using bolt right now which resulted in requesting a refund.
I was not getting any critical errors regarding loading assemblies but they did pop up as warnings, and this is noted in another bug report.
Customer support service by UserEcho