When setting Sequential Numbering in the Format/Scriptwriting/ Script Settings/Scene Headings/Paragraph/Options to anything other than None the compile hangs and never completes.
If I insert “<$n>.” in the Scene Headers, and have no Sequential Numbering displayed I can compile with scene numbers. It is the auto Sequential Numbering option that fails.
I am using Scrivener for Mac 3.1.1 on MacOS 10.13.06 (High Sierra). There were no Crash Logs.