revolve command error to region.

[Anonymous]

Modeling Operation Error:
Unable to compute top curve.

Unable to revolve the selected object.
At least 2 solids or coplanar regions must be selected

this error showing.  In one case region object is revolve but when i move it to somewhere. same above error showing .

still i didnt understand what is the problem

[ronjonp]

Post your sample drawing and show where it works and where it does not.

[Anonymous]

test drawing for revolve

[devitg]

Please draw the axis to be used to revolve