Problem with theme

When i put some theme on presentation and later try to view in preview mode,run mode or view in browser, i give this mistake (like on the picture below) .Can you help me.

Screenshot_1.png

Discussion (1)

This problem isn't related to the theme but to the Lectora version:

http://community.trivantis.com/forums/topic/lectora-6-1-buttons/

Tim

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