This is Firefox's reason for the error. I couldn't post it in the bug tracker. It appears that either the code is bad, or it's being hacked.

The location response header is defined as having a single absolute URL, so that response is non-sensical. But that's not why it's suddenly rejected - we do that because it matches the signature of a variation of a CRLF injection attack. See 655389. For security reasons, they need to fix their server.

 

It's in the cookies. Deleted all the alphabet soup cookies from DTR and the error's gone. We'll see if it sticks.

 

How did you do that?

 

Clear your Cache (Temporary Internet Files) in your browser...you should do this on a regular basis it fixes a LOT of browsing issues while on the Internet.

I use the Free program Crap Cleaner "CCleaner" https://www.piriform.com/ccleaner/download it is a small unobtrusive program that cleans a lot of the crap that programs leave on your computer.

As with ANY program that you install, pay attention as you install it to be sure to uncheck any boxes that say they will install a toolbar or antivirus program etc.....as a add on.

 

You can clear cookies selectively. Display the cookies for dieseltruckresource.com, and delete all the alphabet soup ones that don't make sense, leaving ones that have names that make sense. Then you don't lose your sign on, displayed threads, status, LEGGS condition, etc.

Clearing the cache (without clearing cookies) didn't fix it for me. If I cleared all cookies, I'd be looking up stuff for weeks getting back into the many web pages where I shop for parts. (mostly electronic)

 

That's my problem too. I still use CCleaner but have to resign myself to remembering about 20 passwords.