Hello!
I thought I'd begin my stay here at the board with a question regarding using own frameworks in an application bundle, because it's not working.
When the program starts at someone else's computer, it tries to link it with a framework in /Users/peter/Library/Frameworks/, which obviously doesn't exist.
I have dragged my frameworks to the "External frameworks and libraries" group in my Carbon C++ Application project and I have a copy file build phase which copies all the frameworks to the Frameworks folder in the bundle.

The error on the user's computer is this:
dyld: Library not loaded: /Users/peter/Library/Frameworks/the framework
Reason: image not found

use install_name_tool to set the load path
somthing like

install_name_tool -id @executable_path/../Frameworks/path/to/framework/binary

Make sure your Installation Path/Directory is set properly.
Use install_name_tool, or if you have the Xcode project for the framework, open it an go to Target Settings.
Recently, I had to add a trailing slash (/) to the end of a framework's current Installation Path in order to get it to work - that may or may not be necessary.