ofxSimpleGuiToo Build Errors

Hey everyone - I’ve been going through the examples and have spent hours and hours trying to get started here. Currently I’m simply trying to compile an emptyExample project (which I followed the instructions in the text file and copied to a new folder and renamed as instructed) with the addons: ofxXmlSettings, ofxMSAInteractiveObject, and ofxSimpleGuiToo. Here are the errors I’m getting - they are related to the actual gl classes from what I can tell, and only happen once I include the ofxSimpleGuiToo addon to the addon folder:

/Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/OpenGL.framework/Headers/gl.h:5:0 Expected constructor, destructor, or type conversion before ‘extern’

/Developer/SDKs/MacOSX10.6.sdk/usr/include/c++/4.2.1/i686-apple-darwin10/bits/gthr.h:33:0 Expected declaration before end of line