thanks to your support, some help from my server-admin and lots of hours searching for a solution i finnaly got it work!
the problem was that somehow the 'pstotext' did not find the 'ghostscript'-library when run per web-php-script.
i had to add "export PATH=$PATH:my_path_to_lib; " to the exec command in 'robot_functions.php'...
here's the full change-instruction in case anyone runs into the same problem:
in
config.inc (some where near 'EXTERNAL TOOLS SETUP') add:
PHP Code:
define('PHPDIG_PATH_TO_BIN','/usr/local/bin');
in
robot_functions.php (near line #1089) find:
PHP Code:
if ($usetool) {
rename($tempfile1,$tempfile2);
exec($command,$result,$retval);
and replace with:
PHP Code:
if ($usetool) {
if(PHPDIG_PATH_TO_BIN)
$setpath="export PATH=$PATH:".PHPDIG_PATH_TO_BIN."; ";
rename($tempfile1,$tempfile2);
exec($setpath.$command,$result,$retval);
maybe that helps someone
*cheers*