I have Set Foxit reader as my default app in the applications section of Firefox options. I have also set "allow" in the privacy and security section of options. When I click on a video file I received via email, a window pops up asking me "how do I want to handle this". It shows that Foxit reader is a default app and I, therefore, click on the box that says "always open files using this app". The next time I click on a different video file, doesn't automatically open. Instead, the how do you want to handle this window pops up again. Can somebody tell me how to correct this problem?

TIA James Birke.