Codesign Error for all projects

I think I messed up my certificates or profiles

That seems unlikely given that the error message is resource fork, Finder information, or similar detritus not allowed. The codesign tool has detected something weird in your app bundle and is complaining about it. Here’s how you can reproduce this problem by hand:

% mkdir -p "MyTrue.app/Contents/MacOS"
% cp "/usr/bin/true" "MyTrue.app/Contents/MacOS/MyTrue"
% mkdir -p "MyTrue.app/Contents/Resources"           
% touch "MyTrue.app/Contents/Resources/test.jpg"
% SetFile -t 'JPEG' "MyTrue.app/Contents/Resources/test.jpg" 
% codesign -s - -f "MyTrue.app"
MyTrue.app: replacing existing signature
MyTrue.app: resource fork, Finder information, or similar detritus not allowed

In this example the presence of the traditional Mac OS file type on the JPEG file is making codesign grumpy, but it could be some other class of metadata, like a resource fork on an extended attribute.

Unfortunately there’s no easy way to get the path of the offending file, but you can try this:

% ls -R@ "MyTrue.app"
…
MyTrue.app/Contents/Resources:
total 0
-rw-r--r--@ 1 quinn  staff  0  4 Nov 15:30 test.jpg
	com.apple.FinderInfo	32 

All of this stuff tends to be reflected in the file’s extended attributes, so you should look for a file with xattrs.

Once you know what file is causing the problem, you can work backwards to find out how it managed to get this cruft.

Share and Enjoy
—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"