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I have installed Miktex 2.9 with the latest update. I work with latex.exe successfully.

I want to learn ConTeXt and I installed Ruby. To get better settings, I restart my computer.

After restarting, I got the following figure. What should I do?

alt text

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Since you are just getting started with ConTeXt, you can ignore MkII (the version that uses pdftex as an engine) and directly try MkIV (the version that uses luatex as an engine). The MkIV wrapper scripts are written in lua and do not require ruby. Simply try 'context filename' to see if it works. – Aditya Jan 13 '11 at 6:13
@Aditya: It does not work. It stops at "!undefined control sequence. 1.2 \usemodule[circuitikz]" – xport Jan 13 '11 at 6:34
Did you see cirtuittikz documentation about fixing the tikz bug (tikz does not switch the complete catcodetable) to work with ConTeXt. – Aditya Jan 13 '11 at 18:23
up vote 6 down vote accepted

Set the environment variable PATH to add ruby's installation directory.

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the root directory of ruby or its nested directory? – xport Jan 13 '11 at 5:38
@xport: wherever ruby.exe is. – Caramdir Jan 13 '11 at 6:04
+ @Caramdir: thanks. The error vanishes at infinity. – xport Jan 13 '11 at 6:12

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