[kh99]

Well, I'm almost out of ideas. I tried to actually install that product but I guess there are other files that go with it.

Just to humor me - maybe try another template, this time a simple one, to try to track down whether it's related to the vBExperience stuff or the plugin code.

ETA: actually, also try this:

                 function prepare_output($id = '', $options = array())
	{
		$this->block_data['mymodification'] = fetch_template('exp_shop_tab') ;
	}

which won't look right but might tell us something about the problem.