Did you exclude FireFox from skinning in the "Per application" settings?

Right,you want FireFox being skinned,but do not want Windowblinds overwrite somethings that may affect skinning on it,it makes lots of senses.   

This is not Stardock's official Support process [or even the specific 'support' section of these Forums].  Instead it is a User discussion Forum where some assistance may be available from fellow users who may or may not experience the same issues.

Firefox has long been a problematic program to skin...or to support skinning as, with every version release they manage to reinvent themselves to the point things won't work as they did.

Personally?  I gave up even thinking of using Firefox about a decade and a half ago for the simple reason they [Firefox] don't seem to be able to find their bum with both hands.

This will simply be another issue of their inanity, and I expect that user file you mention WAS used happily by Windowblinds for user settings re skinning but is only now broken.

I'll see that Neil sees this thread and can deal with FF yet again.

I had two emails into SD themselves but i never got a response. So I was just trying. At least I have it so it does not overwrite any longer. I have a feeling not many in that circle even realize WB writes over those files. I understand why they did it before, but useChrome.css is now  the ONLY way to make deeper changes to FF now that web extensions is active. I use most browsers, At .least the top 4 because the tools and toys i write for my customers have to work on those. I am not  happy with how Mozilla does almost everything these days but I have to work it out one way or another. Thanks for popping in with a friendly voice, made me feel better, I am an old man and have  been doing this since the  C-64 days and get a little crooked when people offer the opposite of help or at least understanding. But I am not telling you anything you don't know . Thank  your for your help moving it  up the line and for chiming in and I look  forward to talking again soon.

You are very welcome =GO=. What you did would not work for me then because even excluding FF it was still writing to it.. At first I just changed  Userchrome to me and admins read only permission. take care.

Dana

Well it does not seem like an answer to overwrite someones files. Seems more like a band-aid than a proper method. Appending to the file would be less of a hassle to me.