Using Xojo 2018 r2 on MacOS 10.13.4 to compile (64-bit). IDE runs fine - no issues.
The compiled 64-bit desktop app crashes frequently using MacOS 10.11.6. When running the debug version, I can consistently make it crash when I close a certain window. The IDE is brought up but no code is noted in the window as to where the crash occurred. If I hit the "run" arrow, I get a Nil object exception.
Usually a crash highlights the offending error. How do you figure out this sort of error?