The SMART Ink plugin for Adobe Acrobat Reader only supports Acrobat Reader and not the full version of Acrobat. The 64-bit version of Acrobat replaces Acrobat Reader upon installation, making it impossible to ink on PDF's using Acrobat/Reader when the full version of Acrobat is installed.

The 32-bit versions allow simultaneous installation, however this is still comes with the inconvenience of needing to open a PDF in the more limited Acrobat Reader to be able to ink on it and switch between the two applications.

Adding support for the full version of Acrobat to the SMART Ink plugin would be useful for those who have a subscription to the full version of Adobe Acrobat