PS CS6: Why is filters / distortion / polar coordinates greyed out?

[MixPix]

I am trying to create a circular pano but find that "filters / distortion / polar coordinates" is greyed out. Anyone know why? Is it an image size problem? I am on a iMac with High Sierra.

 

[Deleted member 378664]

Are you probably working in LAB mode? Or do you have 16 bit mode active?

Try RGB mode or 8 Bit.

Frank

 

[Hector1970]

Usually you have to move to 8 bit mode