gv errors opening postscript output

I'm running into some ghostscript errors running a basic psbasemap command:

psbasemap -Jl-125/70/71.5/73/1:1500000 -B3 -R-141/-115/68/74 -V > map.ps

On the command prompt, the following warnings are printed when I try to
view map.ps with gv:

Warning: Cannot convert string
"-*-Helvetica-Medium-R-Normal--*-140-*-*-P-*-ISO8859-1" to type FontStruct
Warning: Cannot convert string
"-*-Helvetica-Medium-R-Normal--*-120-*-*-P-*-ISO8859-1" to type FontStruct
Warning: Cannot convert string
"-*-Helvetica-Medium-R-Normal--*-100-*-*-P-*-ISO8859-1" to type FontStruct
Warning: Cannot convert string
"-*-Helvetica-Bold-R-Normal--*-120-*-*-P-*-ISO8859-1" to type FontStruct
Warning: Cannot convert string
"-*-Courier-Medium-R-Normal--*-100-*-*-M-*-ISO8859-1" to type FontStruct

The postscript file is unviewable; gv gives these errors in a pop-up dialog:

Error: /undefined in -nan GPL Ghostscript 9.10: Unrecoverable error, exit
code 1

Operand stack:
   5220   19860   311
Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--
--nostringval--   2   %stopped_push   --nostringval--   --nostringval--
--nostringval--   false   1   %stopped_push   1916   1   3   %oparray_pop
1915   1   3   %oparray_pop   1899   1   3   %oparray_pop   1787   1   3
%oparray_pop   --nostringval--   %errorexec_pop   .runexec2
--nostringval--   --nostringval--   --nostringval--   2   %stopped_push
--nostringval--
Dictionary stack:
   --dict:1175/1684(ro)(G)--   --dict:0/20(G)--   --dict:77/200(L)--
--dict:113/250(L)--
Current allocation mode is local
Last OS error: Resource temporarily unavailable

So is this most likely a problem with my fonts on my system? I am running a
32-bit machine with Linux Mint 16, GMT 4.5.9.

uname -a :

Linux Arctic-GIS1 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:12:00 UTC
2013 i686 i686 i686 GNU/Linux

Thanks for any suggestions,

-- 
Eric Patton <[email protected]>

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