Error in Export-Mapping

All export mappings in my project have stopped working. I use them to export all objects of a certain type, so the mapping starts with a microflow to get all objects of that type. However that microflow doesn't even seem to be called, breakpoints never show and loglines also don't appear in the log. It appears that the "Get by Microflow" at the top object is never triggered.
1 answers

This problem occurs when the root entity in the export mapping is empty, and a microflow is used to obtain child elements The root entity can be optional if the root XSD type has multiplicy 1, and contains no simple elements (i.e. string, integer, etc). A workaround for this issue is to map the root entity and to use 'obtain by association' instead of 'obtain by microflow'. The particular bug will be fixed in a next release.