Okay, I remembered again, this problem I had already times.
First, in browsers such as e.g. To enable Google Chrome browser / content settings / flash, select "Allow Flash to run for websites".
Then go to
http://www.macromedia.com/support/docume…gs_manager.html, enter "Global Security Settings panel" and the path where the vtour folder is located. That's all.
Greetings, Thomas