Hi Karl, > After all, it happens for you on some large document, more than likely > it will happen to other people with their own large documents. And if > it's L3-related (not surprising), becomes even more likely, even > independent of tex4ht. --thanks, karl.
We use quite a lot of LaTeX 3 stuff in the MathJax mode - l3regex in particular, so my guess that the issue is related to some huge math chunk. Best, Michal