I just added the REFrostedViewController component to my project, then tried the sample app. It doesn't compile without modification.
The issue is that the sample app's build configuration has Profiling enabled (--profiling compiler switch included). This isn't allowed for those of us using an Indie licence.
The resolution is simple, but a little confusing. I had to first select the 'Profiling enabled' checkbox, cancel the dialog that appears, then deselect the same checkbox, then finally the sample would build and run.
I'm pleased because it looks like a great component.