Today I saw that a new version of Nanoblogger was released, so I decided to update.
I thought this would be a breeze, but it turned out that Kevin (the maintainer of Nanoblogger) changed a lot between the last two versions. Nanoblogger calls (in my setup) Markdown to format the webpages and that’s where it stopped. A little debugging got things going again and I mailed Kevin the patch.
I guess it will be resolved in the next release.
But I am running version 3.4.2 now.