I have downloaded the Acrobat installer program and have run the installer on my computer, but when I attempt to access a PDF document, I get a warning that I don't have the proper plugin to view the document.

There are three possibilities which would most likely cause this to occur.

First, the version of your browser may not support plugins. Netscape 2.0 and Internet Explorer 2.1 were the first versions of these browsers to support this capability. It is highly recommended that you use the current versions of browser software for best results.

Second, there may be more than one copy of the browser software on your hard drive. The Acrobat installer will install the PDFViewer plugin into the first copy of the software it detects on your hard drive. If you find that you have more than one copy, discard the one(s) you don't intend to use and run the Acrobat installer again.

Third, you may need to manually set up the browser software to recognize the PDF format. The configuration procedure for Netscape Navigator and Internet Explorer are somewhat different. Select the procedure for the browser you are using.

In Navigator, while I am downloading a document I try to resize the Navigator window and Navigator quits or freezes. Also, after the document downloads into the Navigator window and I try to use Navigator's Back button, I lose control over the PDF document.

Viewing PDF documents from within Navigator is a new feature and there have been problems reported with this on some systems. There is a simple way to reconfigure your browser so that the PDF document can be sucessfully viewed through Acrobat Reader.

After I've downloaded a chapter and attempt to view it I get a message that the document contains errors and cannot be viewed.

You should make sure that you are using at least version 3.0 of Acrobat Reader. Acrobat Reader 3.01 is the current version that Adobe is making available through their website.

I'm having trouble downloading the Acrobat Installer software.

Please review the downloading and installation instructions on the Adobe website.