we get "BCE0055: Internal compiler error: Index was outside the bounds of the array" when compiling an assignation of a callable (method/function) to a callable variable / parameter with a different number of parameters. eg: callable MyCallable(i as int) as string // note incorrect nbr of params vs MyCallable( def func2(i as int, a as string) as void: print i, a call as MyCallable = func2