https://bugzilla.wikimedia.org/show_bug.cgi?id=31442

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             Bug #: 31442
           Summary: Math not rendering
           Product: MediaWiki
           Version: 1.18
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: major
          Priority: Unprioritized
         Component: General/Unknown
        AssignedTo: [email protected]
        ReportedBy: [email protected]
    Classification: Unclassified


Following the 1.18 deployment, there are now many examples of <math>
expressions that previously rendered correctly and now report the error:

"Failed to parse (PNG conversion failed; check for correct installation of
latex and dvipng (or dvips + gs + convert))"

Simple examples include:

<math>\dot \vec B</math> 

<math>\chi(\hat\mathbf{C})=2.</math>

A work around exists by adding extra braces to the TeX markup as described
here: 

http://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#Math.2FLatex

However, it shouldn't really be necessary to go around and update tons of math
expressions that were working before the upgrade.

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