# Equation numbering lost [closed]

I'm using equation numbering in a book at section level. Somehow, after chapter 10, equation numbers turn 0 and remain that. I'm not doing anything special before that. Any clue?

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## closed as too localized by Joseph Wright♦Nov 19 '12 at 8:45

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Welcome to TeX.SE We're going to see a MWE including `\documentclass` and the appropriate packages to be able to diagnose the problem :) –  cmhughes Nov 16 '12 at 19:39
Usually, we don't put a greeting or a "thank you" in our posts. While this might seem strange at first, it is not a sign of lack of politeness, but rather part of our trying to keep everything very concise. Upvoting is the preferred way here to say "thank you" to users who helped you. –  Kurt Nov 16 '12 at 19:46
In composing the MWE , start with `\documentclass{<class>}`, add the appropriate packages and preamble, and you can just make the first 10 chapters empty, and then add a formula to chapter 11 and show that the numbering is lost. If this does not reproduce the problem, add to it until it does. –  Peter Grill Nov 16 '12 at 20:08
Without being able to reproduce the problem in the form of a MWE , it is going to be difficult to determine the source of the problem or suggest a fix. Personally, I have often solved my own problems in the process of reducing the amount of code actually required to reproduce the problem. –  Peter Grill Nov 16 '12 at 20:09
With no MWE this is too localized. Request reopening if one is available. –  Joseph Wright Nov 19 '12 at 8:45