I have the exact same experience. I ran 1.4 during the day. Rebooted tonight and BAM! I searched this forums and found this solution. I copied the .lic file like it said but it didn't work for me, still "trial expired". I didn't mess with system time/date or anything.
Damn, 1.5 is unusable for me in the car, I hope we can get 1.4 working again!
As a minor bug, I had CF 1.4 set to "always on top" and it hid the "trial expired" dialog, making me thing the "initializing" screen was frozen.