puts "REQUIRED All: ERROR. Mixed connectivity of faces."
puts "REQUIRED All: Error : The offset cannot be built."
puts "============"
puts "0030055: BRepOffset_MakeOffset throws TopoDS_Vertex hasn't gp_Pnt in intersection mode"
puts "============"

restore [locate_data_file bug30055.brep] a

thickshell result a 1 i

if { [isdraw result] } {
   puts "ERROR - result must not be built"
}