Plot to DWF causes mystery lines to appear and removes a Block from title block

I am plotting someone else's dwg into which I've inserted my TB x-ref into Layout Space. They have their own x-ref’s inserted into Model Space, where I’ve added my own info on top. When I plot the Layouts to a DWF, my Logo (a block) I have in my TB does not show up in the DWF, and then, when I print that DWF mysterious lines appear on top of my TB! I do not have any layers Off or Frozen that make up my Block. The lines do not show up in the DWG, even with all layers on and thawed. If I print directly to my plotter everything looks right. It just happens when I make the DWF, and it just happens with their dwgs. If I make a DWF of my own dwg with just my TB it's fine. This happens whether I use AutoCAD 2006 or 2007, and I have installed the Service Pack 1 for 2007. What am I missing? Please help!

Hi

Could you please post an example DWG file ( including associated Xref's and Plot Style Table used during output phase ) that exhibits the behaviour you have described above... so we may take a look at the issue / problem, first-hand.

Have a good one, Mike