PBO unpack repack problem NOT Arma File?

What PBO extractor / packer / editor i can use with Epidemic Files. I Run a Private server with HFBservers as my Server provider. Map and game run fine but i want to make changes to the Variables and Compiles to my liking. When i try to unpack the Dayz_code or Dayz_Epidemic pbo it says "Not an Arma PBO" file. I have tried 3 other pbo programs they all have issues with these pbo's. Please let me know what PBO program to use. I cannot and have not found anything pertaining to Epidemic. I have made changes to my personal liking to all other maps i have tried without problems. Why i cannot extract these are a mystery to me. Thank you in advance to anyone that can help.
 
PBO View is very out of date right now and cannot handle 'OA' style pbos.

CPBO and PBO Manager should be able to handle any current files, but I have seen some issues where PBO Manager started repacking server.pbo incorrectly and needed to be reinstalled.
 
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