[MiKTeX] "\if" and DVI problem

[<ER...@kt...>]

Hi all,

	I have recently installed MikTeX (ver. 2.5) and WinEdt (Build 20050701 =
v5.4) in a laptop and when I compile my file which uses the following =
instruction:
---------------------
\newif\ifPDF
\ifxpdfoutput\undefined\PDFfalse \else \ifnum \pdfoutput
\>0 \PDFfalse
	\else\PDFfalse
	\fi
\fi \ifPDF
	\usepackage[pdftex]{graphicx,color}
	\usepackage[pddftex,cololink]{hyperref}
\else
	\usepackage[dvips]{graphicx}
	\usepackage[dvips]{hyperref}
\fi
----------------------
in order to create links in a PDF, it appears the following error:

--------------------
!Incomplete \ifnum: all text was ignored after line4.
<inserted text>
	\fi
--------------------

If a remove it, the problem disappears, however, in a another part of my =
file I use the \protect command in order to use a reference so it can =
appear in caption, this is:

-------------------------
\begin{table}[h!]\fonsize{8}{10pt}\selectfont \caption{Physical =
properties \protect\cite{Downs}.}
-------------------------

Producing the following message:
-------------------------
!Extra \fi.
<recently read> \fi
1.2083 ...sical properties \protect \cite{Downs}.}
?
! Emergency stop.
<recently read> \fi
1.2083 ...sical properties \protect \cite{Downs}.}

End of file on the terminal!
-------------------------

The same file I have used it before in another machine without any =
problem although with another version of MiTeX and WindEdt (if one of =
these were the problem).

Is there anybody who kindly help me? Of course I don't know if this is a =
MikTeX related problem and my apologies in advance.


Regards,
Edgar