Hey Erik,
Thank you for posting on Adobe forums.
Could you please try this:
- Open Adobe Reader and choose "Edit" menu, and select "Preferences..."
- On the left-hand "Categories:" menu, select "Security (Enhanced)".
- In the "Sandbox Protections" section, uncheck the box at the top left called "Enable Protected Mode at Startup"
Close all open instances of Adobe Reader and then try again.
Let me know how it goes.
Regards,
Anubha