Due to an error which occurred while updating the mChat extension to the newest version, it had to be completely removed and re-installed. This means all your preferences have been reset to the board defaults, so you'll want to have a look at those again and set them as you wish

Apologies for the hassle!
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Somewhat related - the Galleons (Ultimate Points) extension also gave an error but this was fixed rather quickly; however, some bugs may have slipped past us. If you find anythings wrong with the Galleons system, do please let us know!