ps.map

Has anyone gotten the ps.map "masked vectors" option to work.

When I run the following script:

scale 1:300000
maploc 1 .75
vect surface_des
  color black
  width 1
  masked y
  end
vect basins
  color black
  width 2
  masked y
  end
labels sanmateo.l
end
end

I get the following messages:

PS-PAINT: using default configuration values.
PS-PAINT: scale set to 1 : 300000.
PS-PAINT: reading vector file <basins in rwqcb> ...
PS-PAINT: reading vector file <surface_des in rwqcb> ...

Can't open temporary PostScript mask file.

Under my $LOCATION/.tmp/machinename/ I have a file 17411.0

scale 1:300000
maploc 1 .75
vect surface_des
    color black
    width 1
    masked y
vect basins
    color black
    width 2
    masked y

I don't seem to have any other $LOCATION/.tmp files.
Is this a known bug?
Is this a UNIX configuration problem?

Any ideas would be welcome!!!

-Sue Huse
REGIS
UC Berkeley