Did you check the Home page settings?

• How to set the home page - Firefox supports multiple home pages separated by '|' symbols

You can start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.com/kb/Safe+Mode

It is also possible that there is a problem with the files sessionstore.js and sessionstore.bak in the Profile Folder

Delete sessionstore.js and sessionstore.bak in the Profile Folder

• Help > Troubleshooting Information > Profile Directory: Open Containing Folder

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well.

Deleting sessionstore.js will cause App Tabs and Tab Groups to get lost, so you will have to create them again (make a note).

See:

• http://kb.mozillazine.org/Session_Restore

Ok, none of above helped, but I do see what my problem is. As my homepage, I had a | in front of the http which made it think there was an open page in front. I feel good, figured it out myself!!! But thanks for the help everyone. I'm still waiting for an answer on another question I posted in here. It was concerning setting up Adblock Plus. Please go out there to see what I'm looking for. Thank you.

You're welcome.

Did you miss: Firefox supports multiple home pages separated by '|' symbols  ?

That pipe symbol at the begin of the Home page setting will cause a blank page to open.

I saw it, but didn't realize I had it in front of my first home page!!!