I noticed that posting a blog via openlivewriter fails if it contains images and 'Extract First Image to Property' is on with the following error:

Error also in text for searchability:

Server Error 1 Occurred

Exception during XmlRpcService call: Cannot cast dataType configuration, of type MediaPicker3Configuration, to ImageCropperConfiguration.

I guess this is missed in the commit: d43b308

I tried to fix this following the code changes in src/Articulate/ImportExport/BlogMlImporter.cs but did not (yet) got it working.

For now I disabled the first image extract option.