Xcode "Use of undeclared identifier" errors, compiles/runs just fine

I've got an incredibly annoying issue that is hampering my workflow. In my project I have "User of undeclared identifier" errors all over. They are all in reference to a single class, specifically a Theme class. I checked for any circular referencing with my imports, none. I'm really confused.

Here is a screenshot of the errors. I would post errors in the Build Log for more detail, but there aren't any. It builds and runs just fine...

I've tried cleaning, deleting the derived data... Any ideas?

I was having the same problem and noticed that all of the undeclared identifiers were declared in files that were in my pch file.

With this in mind I deleted one of the #import lines from the pch file and recompiled which failed as expected. I then put the deleted line back in, recompiled and it compiled normally with all the false errors gone.

Hopefully this simple solution helps a few of you out if the above solutions don't.