Mac Blender 2.77 installation problem

[Samra Obeid]

Hi,

after moving all files to the Application Support/Blender/2.77/scripts/addons folder ePMV, ePMV syncro and autopack show up in the add-on section of Blender 2.77. When I try to check the plugins, Blender gives me the following message:

Do you have any idea what to do?

Thanks in advance

Samra