Hello, I have a similar problem as mr. 'herouth' above...
I do not know if he has it exactly the same. but my email address is perfectly valid, but very normal too... 'noudio <at> zonnet <dot> nl', but I do get the following server response:
Warning: preg_match() [function.preg-match]: Compilation failed: range out of order in character class at offset 22 in /usr/local/cpanel/base/scripts/signup.php on line 76
We're sorry, but that is an invalid email address. Please go back and correct it.
I really like to sign up here. for a website to practice my php/mysql/css/html skills and experiment with it...
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...oh... now I see all reply reactions on this thread, reporting exactly the same... sorry folks, one complete newby here...
Noud