Last modified: 2006-04-19 22:23:27 UTC
Instead of displaying math tags the system shows a message Failed to parse (Can't write to or create math output directory): Currently this affects a numerous minority of mathematics-related entries. Examples: http://en.wikipedia.org/wiki/Bilinear_operator http://en.wikipedia.org/wiki/Cramer%27s_rule Here is an example of a <math> tag behaving normally http://en.wikipedia.org/wiki/Tensor_contraction
Purging seems to clear this up. Append action=purge to the URL of affected pages, which forces them to be re-rendered.