I am getting this message when I try to install the Adaptable theme.
We are running Moodle 2.9.1
Your Moodle version is too old for the theme...
As Emma pointed, you are using a deprecated version of moodle and Adaptable latest version is not compatible with it.
You still can use an old Adaptable version available in the Plugins directory. Please, SELECT THE RIGHT VERSION in the Versions tab in Adaptable page..
Notice that we do not provide support for moodle 2.9 and Adaptable will not update this version. You must upgrade your site asap to latest moodle version.
Next Adaptable version will be compatible with moodle 3.2 and higher ONLY. The existing version will be compatible with previous version.
We have actually decided to go ahead and update the Moodle OS next week for this and many other good reasons.
Thank you!
Jeff