Problems with Xcode Syntax Highlighting

Question

In Xcode 3.2.1 I have this problem where it stops highlighting Objects in purple, and such. For example:

In that example, NSAutoreleasePool, pool, img, size, w

Answer 1

I noticed that opening projects from the XCode welcome screen causes this issue. If I dismis the welcome screen and then go file open (or file open recent) and open the project that way the syntax highlighting works