When using Load and Slew for Alignment and the image I am aligning with isn't at the same rotation angle as my current image (I have re-mounted the camera at a slightly different angle), I get a pop-up dialog showing me the rotation angle with message "Uncheck Rotator in Alignment Options .." I can't find this option? Does anybody know where this is as I would like to uncheck it.

Is this a new feature as I had a message about needing to change my rotators setting when I was trying to do ‘capture and solve’? I just cancelled the pop up and tried again and it didn’t happen again.

Not too familiar with rotator options, but I believe the message is talking about this one.
Click options in the lower-right corner of the align tab (see arrow) and then go to the checkbox by the other arrow.