Can't open Monkeyworld3D manuals

I can't seem to open the user manuals for Monkeyworld3D.  It always tells me they are invalid.  This is true for the alpha 1.0 and 2.0 manuals.  Using winXP.  Anyone else having this problem?

I was just able to download and open the manual; so the doc is fine.  What is the file size of the manual that you downloaded?

I guess it was just a firefox pdf extension messing the download up.  I removed it and now everything is fine.

Excellent.  Glad you're up and running.