Thread:Project:Support desk/Using Convert Template From Wikipedia Throwing Scribunto Error

I imported the convert template (Template:convert) from Wikipedia to use on my Wiki; it throws the following error when used:

Internal Eroror [18eba24f] 2013-07-09 15:00:33: Fatal exception of type ScribuntoException

My MediaWiki version is: 1.21.1 PHP: 5.3.24 MySQL: 5.1.69