Question Problem with crypsis editor

Hi there i hope u can help me.
ive got the problem if i try to choose the image-, videourl or the link-button at the editor. It opens a lightbox or shadoweffect. But nothing is to see.
Joomla 3.51
comprofiler 2014
Kunena 4.0.10
template crypsis
ive got an custom template nts-karbon installed but isnt active

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Joomla default template details : yoo_drive | author: YOOtheme | version: 1.0.1 | creationdate: December 2012

Kunena default template details : Crypsis | author: Kunena Team | version: 4.0.10 | creationdate: 2016-02-18

Kunena version detailed: Kunena 4.0.10 | 2016-02-18 [ Villavicencio ]
| Kunena detailed configuration:

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