The following tools are not working in my Acrobat Pro XI:
The tool buttons have worked in the past, and are still visible.
They just aren't "lit up" anymore (see screen shot below, they are the 3 grey buttons on the right) and don't work.
Any suggestions on how to get these tools functional again?
This is very likely related to "touch mode". Go into Acrobat's preferences and select the "General" category. Here you should find the touch mode control. Set this to "Never" to see if this makes a difference.
that solved it. thanks.