In my last post i search for help concerning to the use of the libs Reportlab in to Zope environment. I make some research in Reportlab mailing list and Osmin Lazo (Canada) suggests my to use the following buffer class ######################## # Buffer Class ######################## class buffer: def __init__(self): self._buffer = [] self._size = 0 def write(self,line): self._buffer.append(str(line)) def read(self): data = string.join(self._buffer, '') return data def tell(self): return len(self._buffer) My fistreportlabinzope.py is: ############################# # firstreportlabinzope.py ############################## import string from reportlab.pdfgen.canvas import Canvas from reportlab.lib.pagesizes import A3, landscape from reportlab.pdfgen.textobject import PDFTextObject from types import * class buffer: def __init__(self): self._buffer = [] self._size = 0 def write(self,line): self._buffer.append(str(line)) def read(self): data = string.join(self._buffer, '') return data def tell(self): return len(self._buffer) stream = buffer() c = Canvas(stream, pagesize=landscape(A3), bottomup=0) c.setFont("Times-Roman", 12.0, leading=10.0) c.drawString(100,100, "Hello World") c.showPage() c.save() tempfile=open("helloworld.pdf","wb") tempfile.write(stream.read()) temfile.close() ########################3 My main problem is: When i tried to add the External method i have the following error message: IOERROR: [Errno 13] Permission Denied 'helloworld.pdf' How i can fix it? Have a nice day Jorge