It only seems to apply to certain special characters I’m finding, and to brackets. Try a link with a ć for instance, or an ā. Either as a new page/sub page or a hyperlink within the page. Any form of link, it doesn’t matter. You will probably see some odd behaviour. I wish I could give you step-by-step method to reproduce the error but it’s sporadic, unreliable, with different or no results each time. What I have noticed, however, is that if I stop using special characters then the software runs smoothly and stably. > On 27 Apr 2016, at 20:59, Jaap Karssenberg