Re: Error while registering new user
Got an answer off of Stackoverflow, but thought it might be of interest to the group here:
From the answer there, "it's due to an older version of PHP 5 which hasn't got the mcrypt extension enabled".
The options (also from the answer there):
•Upgrade to php 7 (probably not an option unless it's your own server)
•Enable php-mcrypt for you php (also probably not possible)
•Try again with a recent "daily build" 16.x tarball from dev.tiki.org
•Or enable one of the other CAPTCHA methods on Control panels->Security->Spam Protection, such as ReCaptcha or CAPTCHA Questions
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