/projdir/build/ problem

First of all, thank you very much for developing an alternative to Xcode. As an IntelliJ user, I'm expecting great things from appCode.

Now, to my question:
I'm trying to work with my existing projects and I'm getting various errors.
In one of them, the build works fine however when I try to run it, it complains that it cannot find the executable in the projdir/build/xxx. But there's no build subdirectory in my project directory as there's a common build directory configured for all the projects. I assume this setup is properly inherited from Xcode because it is used by appCode during the build process: I can see the project is built in the common directory that is outside the project structure.
How do I tell appCode not to look in projdir/build? I couldn't see a setting in the Settings. Am I missing something?

Thanks.