2014-04-30, 09:11 PM
Ok, the files need to be thumbnail images loaded via the MyBB attachments system. This thread of mine here shows the expected behaviour:
http://www.leefish.nl/mybb/showthread.php?tid=5337
Click on an image.
http://www.leefish.nl/mybb/showthread.php?tid=5337
Click on an image.