[CMake] CPack in CMake 3.1.0 doesn't install files

[NoRulez]

Hello,

we have only upgraded to the last release 3.1.0 from 3.0.2 and get the following when cpack is executed in a CTestScript:

error: fixup_bundle: not a valid bundle

The files are ceated, but they are not copied to the _CPack_Packages folder

Then I found out that the variable "CMAKE_INSTALL_CONFIG_NAME" is empty in the cmake_install.cmake files

Any hints?

Best Regards