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Ever since the last update, I cannot have two Firefox windows open at the same time.

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Since the last update, I cannot have two Firefox windows open at the same time. The first Firefox window opens fine, loads the webpage and all the toolbars. I can open multiple tabs within the window and they are also fine. But if I try to open another new window with the first still open, or even try to click on a link and tell it to open in a new window, nothing will load. I just get a blank page with no toolbars, nothing on the page loads.

Since the last update, I cannot have two Firefox windows open at the same time. The first Firefox window opens fine, loads the webpage and all the toolbars. I can open multiple tabs within the window and they are also fine. But if I try to open another new window with the first still open, or even try to click on a link and tell it to open in a new window, nothing will load. I just get a blank page with no toolbars, nothing on the page loads.