@Philip Gaines did you check permissions for categories? And there is an option for Whats new block in setting to display videos in selected categories.
I confirm this bug. Try to go ACP > Customization > Themes > click </> to edit your theme > core > global > plugins > bim_tthumb_showGallery
Find
{$topic->url('changeTopicThumbnail')}
Replace by
{$row->url('changeTopicThumbnail')}
Save