With version 1.14.4 downloaded from this thread, plugin doesn't crash but nothing happens. I'm still learning how it works.

Happens when saving or reloading by right-click.

Works wonderfully!! Very sophisticated Plugin. I love its power and friendliness.

It needed Lines 44 and 66 of file BGSketchup.rb changed to delete .chr in my U.S. version of SU8 on win7.