hey cckhall. welcome to the forums
I just tried downloading the plan and it worked fine.
not sure how you're getting that error.
the way i got the plans sucsessfully is i went to
http://mikeysrc.com/FPV_V3.html then i followed his directions on the link itsself, right click on the link and choose save as. i didnt change any settings or the name of the file i just saved it to my downloads folder and it worked.
are you perhaps on a mac?
if you're still having issues could you please post the actual error message you're getting, this will help us try to narrow down what your problem is.
Dave