macos - Codesign: What are unsealed contents?

Question

I have just upgraded to XCode 6 and tried to build my Developer ID signed Mac app. However, I now get the following codesign error:

unsealed contents present in the root directory of an embedded framework

This applies to the Dropbox.framework that I use. Obviously that could not be signed. What does the error mean? What is wrong?

Answer 1

The problem is the version.txt file that resides in the Dropbox.framework. While this is useful to know which version the framework is, it seems no longer to be OK for codesigning.

When I removed the file everything worked fine again.