After i updated to adobe xl thunderbird wont open pdf docs in my emails

Question

Hi I updated to adobe xl and since then thunderbird will not open any pdf document within my emails but it did before can anybody help please

Answer 1

Getting Firefox 4 to Save Tabs On Exit Again
So when Firefox 3.6 came out, wrote a post get new tabs to open at the end like they used to (my personal preference). Today with the release of Firefox 4, it seems they have disabled the “Do you want to save tabs for next time Firefox starts?” message. Here’s how you get it back:
1) Open Firefox
2) Type into the address bar “about:config” – without the quote marks – and press enter
3) If prompted click the button marked “I’ll be careful, I promise” – This won’t be harmful to your system as long as you don’t go randomly clicking around
4) In the filter bar type “browser.showQuitWarning” and press enter
5) There should only be one item in the list, double click it to set it to true (It will go bold)
6) Try closing Firefox with multiple tabs open, and enjoy.
Click the screen shot below to have a closer look
I really don’t know why this is now turned off by default, this is a regression to Firefox 2, when everything else about Firefox 4 is awsome.
Update: If the above dosn’t fix your problems right away, use the same method to set the following values: to true (if they aren’t already):
browser.tabs.warnOnClose
browser.warnOnQuit
browser.warnOnRestart