Plot becomes invalid due to no available solution

Hi,

I am working with Ansoft-Maxwell for my project and designed the disconnector and simulated the discoonector in open condition.
The problem is it displays that the plot 'Mag E' becomes invalid due to no available solution. As I am wanted to plot the electric field in the plane and see the plot which wasn't possible.
I also used region as boundary and applied 0 kV to one arm of disconnector and other arm with 267 kV to know the electric field distribution.

Can anybody help me to solve this as I got stuck here.

Thanks,
Vijay.