Hi Guys,
 I am using error handling in TCL/TK for checking whether the entity used for midsurface creation is solid or not. First I check if component is solid or not using below command and if it is solid, I again use this command (except error handling) to generate midsurface.
 set solidCheck  [catch {*midsurface_extract_10 solids 1 3 0 1 1 3 0 3 0 0 10 0 10 -2 undefined 0 0 0}]; But the problem is that I am getting duplicate mid-surfaces. So my question is do we get midsurfaces when we use above error handling code?
 Any help is much appreciated.
 Thank you!