I have Joomla version 2.6.5. Front-end I use Dutch and back-end English.
But I just found a fix for the problem, the problem was that my content language was misconfigured. The language tag was wrong so Ccomment was searching for nl-NL, but the tag that I insert was NL-BE. After I changed it to nl-NL, the problem was fixed.
Thanks anyways for the help!
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