Hi Ian,
Acrobat 10 Pro may or may not work with the latest macOS Sierra v-10.12.6 as the compatibility test has not been carreid out after Mac 10.7.
However, you may try uninstalling the Acrobat and then resetting the Acrobat preferences files in Mac os. Refer to the following link for troubleshooting steps: How to reset Acrobat Preference settings to default.
Install the Acrobat 10 Pro from the following link: Download Pro or Standard versions of Acrobat DC, XI, or X
If this does not work, you may try enabling the Root account and check. You can refer the link to enable the root account: How to enable the root user on your Mac - Apple Support
If Acrobat 10 pro is working in the Root account, then this could be permission issue on the user profile. Then you can create a new user profile and install the Acrobat 10 Pro.
You can disable the Root account later on.
Keep us posted with the results.
Regards,
Anand Sri.