CAPTCHA v2.1.2 has been released to address a security vulnerability I discovered in the code this morning. All CAPTCHA users are encouraged to upgrade as soon as possible. The upgrade process is very straight forward, simply copy over the new source files, then go into your Plugin Manager and select Update for the CAPTCHA plugin.
There is one other small tweak, if the session start fails, it will do so silently, no longer causing scripts to stop. This should resolve any issues with the emailgeeklogstories cron script.