# Where is mp.exe in MikTeX 2.9?

I am a a retired software engineer and a newbie on this site. Please execuse me for the naiveness in my question.

I am using Windows, XP and Vista. Other OS's are not affordable to me for now. I used to have MikTeX 2.8 and was using the packages it came with it to draw automata. The way I used to do, was, write a `.mp` file and use `mp.exe` to preprocess it to create a graphics file and then TeXnicCenter would take it when I `\usepackage{graphics}`. I have a bunch of `.tex` files in this way.

Recently, I had to uninstall MikTeX 2.8 and replace it with MikTeX 2.9. Everything was okay when I tried it with `.tex` files without any graphics. When I tried to do with those with automata state diagrams, I found out `mp.exe` is missing from MikTeX 2.9.

I have two options,

1. I still have the original protext.exe for MikTeX 2.8 so I can back out MikTeX 2.9 and re-install 2.8.

2. Use TikZ to draw automata state diagrams.

I personally prefer option 1. However, option 2 seems to be the best, from all I have read on this site. But, option 2 means that I have to spend some time and efforts to learn TikZ. So, I need to know, how bad is option 1? Or, do I have option 3, that is, something compatible with `mp.exe` in 2.9?

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do you mean metapost? –  Harish Kumar Mar 28 '12 at 7:01
@Harish Kumar, yes. metapost. –  scaaahu Mar 28 '12 at 7:04
I think it is renamed now as `mpost.exe`. It is there inside `C:\Program Files\MiKTeX 2.9\miktex\bin`. Pl. try. I never used meta post hence it is a guess. –  Harish Kumar Mar 28 '12 at 7:07
@Harish, yes mpost is in bin. I just tried it. My mp files that used to work with mp does NOT work anymore. Could be some compatibility issue. Is mpost just a rename of mp? –  scaaahu Mar 28 '12 at 7:15
Pl. see the answer below about some bug. –  Harish Kumar Mar 28 '12 at 7:16