want to create a grafik w PIL and store into my instance which is subclassed from OFS.Image.Image. Excerpt: def manage_draw_PraxisIndex ... sql_graph = [ (1, 8), (16, 8), (1, 9), (16, 9) ] import PIL.Image # name clash PIL.Image % OFS.Image import PIL.ImageDraw # mode, size thePic = PIL.Image.new( "RGB", (17, 17) ) draw = PIL.ImageDraw.Draw(thePic) draw.line( sql_graph) from cStringIO import StringIO pic_File = StringIO('') 201>> thePic.save(pic_File) Error Type: KeyError Error Value: Traceback (innermost last): File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 223, in publish_module File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 187, in publish File C:\PROGRA~1\Zope232\lib\python\Zope\__init__.py, line 221, in zpublisher_exception_hook (Object: rki) File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 171, in publish File C:\PROGRA~1\Zope232\lib\python\ZPublisher\mapply.py, line 160, in mapply (Object: manage_draw_PraxisIndex) File C:\PROGRA~1\Zope232\lib\python\ZPublisher\Publish.py, line 112, in call_object (Object: manage_draw_PraxisIndex) File C:\Programme\Zope232\lib\python\Products\PraxInd\RKI.py, line 201, in manage_draw_PraxisIndex (Object: rki) File C:\Programme\Zope232\bin\PIL\Image.py, line 681, in save KeyError: (see above) what did i miss? Also: How does an image get displayed, when <img src="myImageURL">, what is the browser request and to which call (of Image) will it get mapped? thanks a lot, cheers hans -- ------------------------------------------------------------- Who's got only a hammer sees the world as a nail hans augustin (software developer) hans@beehive.de beehive elektronische medien GmbH http://www.beehive.de phone: +49 30 847-82 0 fax: +49 30 847-82 299