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After looking at the example package you provided (and fixing some issues with it, please make sure things compile on your own machine in the future), I believe the following is the problem (from #q69583 in fact):

from dynamic_reconfigure.parameter_generator import *

This is the line you would use for the old version of dynamic_reconfigure, ie: the one for rosbuild. For Catkin, the line should read:

from dynamic_reconfigure.parameter_generator_catkin import *

note the _catkin suffix there.

I would suggest to take a look at the How to Write Your First .cfg File tutorial, just to see whether the .cfg file contains some other rosbuild-isms.

from dynamic_reconfigure.parameter_generator import *

This is the line you would use for the old version of dynamic_reconfigure, ie: the one for rosbuild. For Catkin, the line should read:

from dynamic_reconfigure.parameter_generator_catkin import *

note the _catkin suffix there.

I would suggest to take a look at the How to Write Your First .cfg File tutorial, just to see whether the .cfg file contains some other rosbuild-isms.

Edit: changes to the pkg and files I had to make:

the .cfg file was not executable
the Start() prototype in the .cpp file did not agree with the one in the header
the prototype for Stop() in the .cpp file included an extra S, prefixed to the class name
the CMakeLists.txt referenced Boost twice without a find_package(Boost ..) anywhere
the CMakeLists.txt referenced a non-existing include directory

In addition, with the Catkin version of the dynamic_reconfigure generator, the cfg/cpp directory should not be on the include path any longer.