CS4 Crashing on Launch?

Slowly starting to migrate to CS4, started with Flash and then Photoshop ended the party.

Every attempt to fire up a CS4 product after installing Photoshop, I got this dreaded licensing issue... ERROR 150:30

EASY FIX! For OS X

Well, at least for me...

Step 1: navigate to /Library/Preferences/FLEXnet Publisher/FLEXnet

Step 2: delete all the files in there.

* Do this at your own peril... It worked for me and beyond banging the keyboard (or Scotch), I hope you got recent back-ups and CS3 is still installed.