I've just started developing in Titanium.
I keep on getting this error:
The application builds and runs on the emulator.
I have started to play around with the code and a simple addition of "borderWidth:2," to a window breaks the application.
I have checked my syntax over and its all correct.
Could the error message I'm getting in Titanium have anything to do with it? and how do I fix this error message?
Titanium SDK: 1.4.0
The error you're seeing in TiDeveloper should not be a problem. It's related to changes in the underlying Android SDK and Developer still using the old (deprecated, though still functional) techniques. There was someone else who posted here, though, who could not build his app for distribution and was getting this error. So, YMMV.
I think your border width is unrelated. I'd need to see more of your code to identify the problem.