If your script isn't running at all - so you aren't even seeing an alert or GM_log message you've included -
1. Check that it's included on the page (will appear on the Greasemonkey menu with a tick)
2. Check - in the Error Console with 'All' or 'Errors' selected - that there isn't a Javascript syntax error in it.
I've been caught time and time again by this, having set the console to 'Messages' only and not looking at the Errors.
Anti-nuisance lawsuit warning: The purpose of these notes is to remind me, Zoegond, of stuff or to help me work stuff out. They may contain mistakes.
Quick
- ($a, $b....) = unpack("A2A7...", $packed)
- push( array, list )