Firefox doesn’t know how to open the address
I am searching on forums regarding a solution on how to solve a certain issue. Most of the people in the forum posted a screenshot to make it easier for the reader and to understand the solutions clearly. I found a forum that will answer my issue, I clicked on the links he posted for the screenshots of his solutions, upon clicking, a new tab opens but it has nothing and the title on the address bar is Blank. And then it pop out an alert box stating that
Obviously, I am using Mozilla Firefox, Version 4.0 on my Windows XP Pro Service Pack 3. I figured that this maybe a problem with my java or flash player, but when I checked on each, it is up to date and both are running correctly and both are enabled. To check again for a possible solution, I uninstall my Mozilla Firefox and re-install a fresh copy from Mozilla website itself. I am unlucky to find a solution. I cleared the cache, history and everything, but that doesn't solve the problem. I want to know what is causing this error to appear.
Does it have to do with Firefox add-ons?
If so, what add-ons am I missing?
Please inform me.