[Zope] BalkTalk unable to generate PDF

[Bin Zhang]

I installed Zope 2.61, PIL 1.1.3 and reportlab on a RedHat Linux 
server.  I was able to generate a PDF if the BackTalk book doesn't have 
any images in it.  Otherwise Zope will give me this in error log:

Traceback (innermost last):
  Module ZPublisher.Publish, line 98, in publish
  Module ZPublisher.mapply, line 88, in mapply
  Module ZPublisher.Publish, line 39, in call_object
  Module Products.BackTalk.BackTalk, line 325, in manage_makePDF
  Module Products.BackTalk.BackTalk, line 362, in makePDF
  Module Products.BackTalk.PDFClass, line 288, in __call__
  Module Products.BackTalk.PDFClass, line 239, in dispatch
  Module Products.BackTalk.PDFClass, line 309, in document
  Module Products.BackTalk.PDFClass, line 403, in bullet
  Module Products.BackTalk.PDFClass, line 346, in paragraph
  Module Products.BackTalk.PDFClass, line 431, in image
  Module Products.BackTalk.Retrievers, line 44, in __call__
AttributeError: height


Can someone tell me what could be the cause?

Bin