Cannot select "Unwrap" even when in "Rotary" mode.

[austindiabase]

Possible bug. No matter what selections are made on screen one, "Unwrap" is not selectable on screen two.

[wilriker]

The whole slicing options box being disabled points towards the Wizard not being able to detect S3D. In the past these issues were resolved by reinstalling S3D. Also restarting Windows usually is a good idea.

If this does not help please state the version of S3D currently installed.