ripping vertices help

I get this message

can’t perform ripping with faces selected this way

when i try to rip vertices to make an eyeball. Also, is this because of the mirror modifier??

please post an image of what your trying to do, and which vertices you have selected when trying to rip. One way to get this message, is to select an entire face and try to rip it, for that you would use ‘y’ to split the face(s) from the rest of the model

Hi,

Rip only works on edges or individual vertices. Not faces.

Might be worth reading the following:
http://www.blender.org/development/release-logs/blender-240/mesh-ripping/

Hope this helps?

Kindest Regards,

Pixeltwister