AttributeError: 'NoneType' object has no attribute 'bands'

[anonymous]

Hi..

I've installed Graphviz, i got this error if i print it as pdf (using TracWikiPrint-Plugin), if i don't insert graphviz code in the wiki site, the pdf just doing fine and don't get this error. Can these 2 Plugins work together? or did i miss something in the installation? Could somebody help me? Thank you in advance.

Oops…
Trac detected an internal error:

AttributeError: 'NoneType' object has no attribute 'bands'

This is probably a local installation issue.
Found a bug in Trac?

If you think this should work and you can reproduce the problem, you should consider creating a bug report.

Note that the TracWikiPrintPlugin plugin seems to be involved. Please report this issue to the plugin maintainer.

Before you do that, though, please first try searching for similar issues, as it is quite likely that this problem has been reported before. For questions about installation and configuration of Trac or its plugins, please try the mailing list instead of creating a ticket.

Otherwise, please a new bug report describing the problem and explain how to reproduce it.
Python Traceback
Most recent call last:

    File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 513, in _dispatch_request
    File "build/bdist.linux-x86_64/egg/trac/web/main.py", line 235, in dispatch
    File "build/bdist.linux-x86_64/egg/trac/wiki/web_ui.py", line 172, in process_request
    File "build/bdist.linux-x86_64/egg/trac/mimeview/api.py", line 982, in send_converted
    File "build/bdist.linux-x86_64/egg/trac/mimeview/api.py", line 681, in convert_content
    File "build/bdist.linux-x86_64/egg/wikiprint/wikiprint.py", line 383, in convert_content
    File "build/bdist.linux-x86_64/egg/wikiprint/wikiprint.py", line 235, in html_to_pdf
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/pisa_document.py", line 172, in pisaDocument
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/platypus/doctemplate.py", line 880, in build
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/platypus/doctemplate.py", line 763, in handle_flowable
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/platypus/frames.py", line 174, in _add
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/platypus/flowables.py", line 108, in drawOn
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/platypus/flowables.py", line 89, in _drawOn
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/pisa_reportlab.py", line 575, in draw
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/reportlab_paragraph.py", line 1054, in draw
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/reportlab_paragraph.py", line 1534, in drawPara
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/reportlab_paragraph.py", line 337, in _leftDrawParaLineX
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/reportlab_paragraph.py", line 217, in _putFragLine
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/pdfgen/canvas.py", line 857, in drawImage
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/pdfbase/pdfdoc.py", line 2086, in __init__
    File "/usr/lib/python2.5/site-packages/reportlab-2.5-py2.5-linux-x86_64.egg/reportlab/pdfbase/pdfdoc.py", line 2173, in loadImageFromSRC
    File "/usr/lib/python2.5/site-packages/pisa-3.0.33-py2.5.egg/sx/pisa3/pisa_reportlab.py", line 324, in getRGBData
    File "/usr/lib/python2.5/site-packages/PIL-1.1.7-py2.5-linux-x86_64.egg/Image.py", line 1497, in split 

System Information:

User Agent: Mozilla/5.0 (Windows NT 6.0; rv:7.0.1) Gecko/20100101 Firefox/7.0.1
Trac 	0.12
Genshi 	0.6
Pygments 	0.10
pysqlite 	2.4.1
Python 	2.5.2 (r252:60911, Jan 24 2010, 14:53:14) [GCC 4.3.2]
pytz 	2008c
setuptools 	0.6c11
SQLite 	3.5.9
Subversion 	1.5.1 (r32289)
jQuery	1.4.2

[Álvaro Iradier]

I think you hit the PIL bug described in #6767, related with using 32 bit images. Can you confirm if the proposed fixes work?

Thanks.