Downloaded the trial version today and am unable to launch it. Application reports "Error: trial period mismatch."

My system clock is fine and hasn't been changed. The built-in Mac firewall is set to allow Wineskin to accept incoming communications. I've deleted the application file and all of the preferences and lock files that I could find, rebooted and reinstalled the application. But still no luck.

Any suggestions?

MacPro, OSX 10.7.4.

Steve