Please, Christian, could you add a wincmd.ini key (defaulted to 0, of course) to allow using beta versions after the expiration date? As TC tester, developer and translator I find it extremely useful to compare different versions of TC to find out exactly when some bug or feature was introduced. It should help to you as well, because you would only need to check the differences between the two consecutive beta-versions instead of two final releases. Let TC show additional warning, let it nag the user about possible problems, but please don't completely forbid running it! I already met with this problem on protected 7.50 early beta versions, and I had hoped it wouldn't arise again…Note: This beta version will expire (stop working) on November 1, 2013.
P.S. I know I could change system timer, but most modern software would immediately think I'm going to cheat with their expiration dates, and punish me by terminating the license. And, yes, there're virtual machines, etc., but they don't share my environment (often necessary for reproducing some problem), they are heavy and require much time and resources to load. Simply running and old TC version is much, much better.