Issue
Script program status is "Loading" after upgrade
Environment
Upgrade Script Program
Cause
A new keyword may have been added to the new version
Resolution
A new keyword may have been added to the new version, for example the word "Debug" can be used as internal variables in script programs up to v1.3, but not in v1.4 onwards. In this case simply change the word "Debug" to Debug1" and all works fine.
Screenshot of Script Properties shown below: