Updates: Status: Fixed
Comment #1 on issue 649 by alexandr...@gmail.com: PNG, BMP, GIF exports do not work anymore in Mondrian http://code.google.com/p/moose-technology/issues/detail?id=649
This is a serious issue. I found the problem: http://code.google.com/p/pharo/issues/detail?id=4383 , but it is pharo related.
For now, the export will be stored next to the image.
New version of Mondrian: 2.102 : Exporting does not ask for the directory anymore. This is broken in Pharo. The original behavior will be reverted once this is fixed