Have a brand new Apple MacBook Pro running latest, fully patched version of Snow Leopard 10.6.7.
I'm running Acrobat 10.0.2 for Mac.
I can invoke the javascript console perfectly with Apple's COMMAND-J key-combination, but once in the console I can't run or execute ANY single or multi-line Javascripts because apparently my MacBook Pro, being a laptop, lacks a Numeric Keypad with the Num Pad Enter key.
And Control-ENTER, Shift-ENTER, Option-ENTER and Command-ENTER don't work either.
I can't believe this is a new or unknown problem in the Acrobat Community.
Don't really want to have to buy an external keyboard simply to develop Acrobat Scripts - and especially so for a laptop.
See the comments for some other possibilities.