The Adobe Acrobat PDF files on this website have been downloaded thousands of times by every sort of computer possible. The files are have been checked and re-checked for errors. I have been able to identify several possible errors you may encounter while downloading—all of the errors have been on the part of the end-user, not our web server.
Make sure you are using Adobe Acrobat Reader 10.0 or above to read these files, version 8 and below will not work.
If you are downloading the files from a web browser make sure you save it as a "Source" document, not as a "Text" document. If you saved it as a "Text" document the Reader will ask you for a "Password" before it tries to open it (it still will not open the file, even with a password).
Some web browsers allow you to see the first page of an Acrobat document before it finishes downloading the rest of the file. Make sure you allow the entire file to download before you attempt to save it or go on to another page.