[l2h] pstoimg: Error: [...] Invalid argument

[Andrea Censi]

I am getting this kind of errors running latex2html:

=================
Converting image #2
pstoimg: Error: "/sw/bin/pnmcrop -verbose  < /tmp/l2h5343/p5405.pnm | 
/sw/bin/pnmcrop -verbose  -bot  -sides  | /sw/bin/pnmcrop -verbose  -l 
-sides   > /tmp/l2h5343/p5405.t00" failed: Invalid argument

Error while converting image

Error: Cannot read 'img2.png': No such file or directory
==================

I tried calling "pnmcrop" with the arguments (-bot -sides ecc) but it 
doesn't complaing, so I guess there's something wrong in the /tmp files.
They get deleted so I can't replicate the exact error.

I'm using:
- fink on Darwin 1.4.1
- LaTeX2HTML Version 2002-2-1 (1.71)
- pnmcrop: Using libnetpbm from Netpbm Version: Netpbm 10.24
- pstoimg (Revision 1.19, perl 5.008006),
   part of LaTeX2HTML Release V2002-2-1.