Firefox-Hilfeforum

At Firefox' recommendation, I added an extension/addon called 'single pane extension' where I think the idea was that Firefox could be save better. But since the install Firefox has become unusable. I can only use it in safe mode. Here is a screenshot. Sorry, but I can't figure out how to fix this.

Instead of having my bookmarks under the toolbar, it's along the left side. I have many things in chrome.css, like one that gives me 4 rows of bookmarks, but on the side, it's only one. If I click on one of the ones I can see, it does go to the website, as I can see the correct url in the address bar. However, everything is blank. Even about:config is blank. Safe mode works, but of course doesn't give me my bookmarks or anything else. The extensions that Safe Mode says are disabled are: Amazon Assistant for Firefox, Dashlane, and New Tab Override. Do you need the things from chrome.css to help me troubleshoot? I can't keep using Safe Mode, don't care for Chrome, and refuse to use IE.