Question

It seems strange but I can't get EasyTimelinePlugin to work at all unless DEBUG = 1, otherwise I get these errors:

• the plugin topic returns on a simple text page, "TWiki detected an internal error - please check your TWiki logs and webserver logs for more information. Couldn't untaint D:path".
• the Apache log says, "Couldn't untaint D:/tmp/EasyTimelinePlugin6348 at D:/perl/lib/CGI/Carp.pm line 319"...

With DEBUG on, it generates the GIF (which it leaves in /tmp because of DEBUG), but not required the PNG (in the /pub directory). The debug log says, "PNG file not created (is nconvert.exe missing?)". That would be appear to be an undocumented dependency on nconvert. I installed nconvert in the ploticus directory (so that it would be in the system path), but that didn't help.

I modified tools/EasyTimeline.pl to show more debug info on nconvert:

  if ((-e $file_bitmap) && ($fmt eq "gif"))
  {
    print "Running nconvert to convert gif image to png format\n\n" ;
    print "---------------------------------------------------------------------------\n" ;
    $cmd = "nconvert.exe -out png " . EscapeShellArg($file_bitmap) ;
    print "$cmd\n";
    print system ($cmd) . "\n";
    print "---------------------------------------------------------------------------\n" ;

    if (! (-e $file_png))
    { print "PNG file not created (is nconvert.exe missing?)\n\n" ; }
  }

Generating output:
Using ploticus command "D:/Common/Ploticus240win32/bin/pl.exe" (D:/Common/Ploticus240win32/bin/pl.exe)
Running Ploticus to generate svg file
"D:/Common/Ploticus240win32/bin/pl.exe"  -svg -o "D:\tmp\EasyTimelinePlugin8016\EasyTimelinePlugin8016.svg" "D:\tmp\EasyTimelinePlugin8016\EasyTimeline.txt.7808" -tightcrop
Running Ploticus to generate bitmap
"D:/Common/Ploticus240win32/bin/pl.exe"  -gif -o "D:\tmp\EasyTimelinePlugin8016\EasyTimelinePlugin8016.gif" "D:\tmp\EasyTimelinePlugin8016\EasyTimeline.txt.7808" -tightcrop
Running nconvert to convert gif image to png format

---------------------------------------------------------------------------
nconvert.exe -out png "D:\tmp\EasyTimelinePlugin8016\EasyTimelinePlugin8016.gif"
256
---------------------------------------------------------------------------
PNG file not created (is nconvert.exe missing?)

Environment

-- SeanCMorgan - 03 Nov 2008

Answer

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Got it: I had to edit /TWiki/tools/EasyTimeline.pl to have the full path for nconvert:
$cmd = "C:/TWiki/Ploticus240win32/bin/nconvert.exe -out png " . EscapeShellArg($file_bitmap) ;

-- SeanCMorgan - 03 Nov 2008