extruding splines

[stephan_MA]

ot:

but here is a basic modelling question:

i imported a parrallel spline in max and want to extrude it with the top closed:

but what i get is just the splines extruded without a lid:

[stephan_MA]

ok. found it:

the vertices are not welded with the import dialog.
maunal welding did the job better.

now work fine: