So installed ok, put in the correct serial when installing, but when attempting to run a popup window prompts for either a serial number or trial (trial is expired - went from 30days to 0 days just from relaunching). When I put in the correct serial # (it gets the green tick) and press 'continue', the window closes and then just reopens again. Have attempted reinstalling to no avail... have flash builder beta 2 installed with no problems with a valid license as well.
Could you please provide the alm.log file which should be in /tmp on the Mac or %TEMP% on Win (usually C:\Temp or C:\tmp)?
Also, please include the amt.log file from the same location.
By any chance, are you running on Win Vista or Win7?