Overview:

Holdem Manager doesn't recognize TableNinja.  (64bit Operating Systems Only)

Note:  This is a temporary problem and will be fixed shortly

This happens when you don't install TableNinja to the default directory. 

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Solution:

You can reinstall TableNinja to it's default directory and everything should be working or you edit the following text file.

Close Holdem Manager

Navigate to:  C:\Program Files(x86)\RVG software\Holdem Manager\Config

Open HoldemManager.config file with Notepad.

Replace this line:      

With this line:            C:\MyCustomTableNinjaInstallFolder

Note the path for C:\MyCustomTableNinjaInstallFolder needs to be changed to your actual TableNinja install folder.

Close Notepad and save file.

Launch Holdem Manager.