Installing this makes a change in order to allow single power press to cause rotation. In order to get to the menu you're familiar with a quick double-tap should bring up the same menu. In order to correct this, you will need to be able to become root and use a text editor to edit the /etc/mce/mce.ini file.

I would make a copy so that you can revert, then edit using a text editor like vi. In the [Power Key] section, you will find information on 'Short', 'Long', and 'Double press' power key behavior.

I haven't installed this recently, but my copy of mce.ini has comments indicating what was changed to allow rotation and what the previous setting was. There's also a lot more info about mce in the forums, if you search.