The compile qc does point to a line it looks like, though this error I've never seen. you can check the QC and show what it has if it has any info about what went wrong
I'll probably improve the logging since the error window doesn't display all the information, the app doesn't generate any logs when compiling which I should add in for 1.2 so it's easier to troubleshoot issues
While vertex issue isn't a bug with the application as you'd know, I could probably try to find a way to allow models like these to be compiled by adding in more files, though I'd need to check the docs again