CineForm won't import

I recently installed GoPro's CineForm codec and created a CineForm file in VirtualDub. However, it won't import into Premiere CS6 - I get an 'unsupported or damaged file' error.

I can export perfectly fine from Premiere in CineForm, and those files play back just fine, but they also won't import back into Premiere.

When I open Media Encoder (unrelated to the CineForm project), I get this error:

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Monitor: PProHeadless.exe - System Error

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The program can't start because CFHDDecoder64.dll is missing from your computer. Try reinstalling the program to fix this problem.

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OK 

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If I click OK enough times it goes away and I can use AME. I

Also when I open After Effects, this error:

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After Effects

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After Effects warning: The following plugins have failed to load.  Please reinstall these plugins:

C:\Program Files\Adobe\Common\Plug-ins\CS6\MediaCore\CFHD_AVI_Importer.prm

C:\Program Files\Adobe\Common\Plug-ins\CS6\MediaCore\CFHD_MOV_Importer.prm

C:\Program Files\Adobe\Common\Plug-ins\CS6\MediaCore\CineForm\CFHD_AVI_Importer.prm

C:\Program Files\Adobe\Common\Plug-ins\CS6\MediaCore\CineForm\CFHD_MOV_Importer.prm

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OK  

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Not sure where I've gone wrong here.