DebuggingAppleScriptSupport

You can turn on CocoaScripting debugging with the NSScriptingDebugLogLevel? preference. This preference can be set for a single app or for the entire system:

defaults write NSGlobalDomain NSScriptingDebugLogLevel 1
defaults write com.myApp NSScriptingDebugLogLevel 1

defaults delete NSGlobalDomain NSScriptingDebugLogLevel
defaults delete com.myApp NSScriptingDebugLogLevel

You can turn on the AppleScript engine's event tracking by setting environment variables. You can do this on a per-executable basis by double-clicking the icon for the executable.

set AEDebug=1
set AEDebugSends=1
set AEDebugReceives=1

unset AEDebug
unset AEDebugSends
unset AEDebugReceives

You can examine NSScriptSuiteRegistry?, NSScriptClassDescription?, and NSScriptCommandDescription? to make sure your classes and commands were read properly from the the .script* files.