I experienced a crash, so I looked at the forum to find many such instances involving the DRT.  I removed it and sure enough, no crash. Poking through the log, I found the following line: 2024-03-15 11:04:29 CL650[dr.c:553]: assertion "dr->value != ((void*)0)" failed: CL650/glass/heat_on   So I added that dataref to Resources/plugins/drt_ignore.txt.  Sure enough, no more crash on load and DRT works with the CL650.  According to DRT FAQ, that could point to some bug in CL650: