# Error in latex and cant open the PDF

1. Aug 28, 2011

### farbodf

when i want to compile this error appear and it cannot open the PDF

could't find input index file: C:\users\farbod\Desktop\1f\1f\PAPER L nor C:\Users\farbod\Desktop\1f\1f\PAPER L.idx.Usage: C:\Program Files (x86)\MiKTeX
2.9\miktex\bin\makeindex.exe [-ilqrcgLT] [-s sty] [-o ind] [-t log] [-p num] [idx0 idx1 ...]

2. Oct 7, 2011

### Greg Bernhardt

This is a PDF file you have created or downloaded? Are you using Acrobat or some other program?

3. Oct 9, 2011

### AlephZero

I guess the paper includes an index, but you don't have the index file, so you need to create it.

Code (Text):

\usepackage{makeidx}

Code (Text):

\makeindex

Just BEFORE the \begin{document}.
You may find the makeindex line is in the file but commented out with a %.

Yes, I do mean put \makeindex BEFORE \begin{document}. If you put it AFTER \begin{document}, it won't work.

Then run LaTeX again and it should create the .idx file.
Then run makeindex to make the index. That should create a .ind file
Then run LaTeX agan to create the paper and the index.

Actually, it's OK to leave the "makeindex" line in the .tex file all the time, but it means you re-create the index file every time you run the code through LaTeX, and that wastes time if you are working with a big .tex file.