Adobe Flash Player has stopped a potentially unsafe operation

What does the rest of the warning message say? It should be something like: The following local application on your computer or network.... and then below that, you should be able to see the location and the name of the file. We need that info.

you can try the following:

• navigate your browser to http://www.adobe.com/software/flash/about/
• right click the Version Information text - it should bring up a context menu
• select "Global Settings"
• click the "Advance" tab in the resulting Flash Player Settings Manager window
• scroll down to Developer Toos and click "Trusted Location Settings...:
• click "Add Folder..."
• select your dvd drive on your system where the video files are located (usually D:\)
• confirm
• close the windows and retry playing the video