'UIFont' is not convertible to 'UIFont?'

Question

So I had updated my XCode to 7.3 today evening.

In one of my projects, I get the following error for few labels where I set the font:

\'(name: String         


        

Answer 1

I had this problem as well. What fixed it for me was to turn off Whole Module Optimization.

Bulid Settings > Swift Compiler - Code Generation > Optimization Level

I had set it to Fastest (Whole Module Optimization). When I set it to None I didn't have this problem anymore. For context, this is a mixed code base with both Objective-C and Swift.