FileChooser window does not open after user attempts to save a file with ':' in title

Dos32Shell raises an exception when attempting to open the parent directory for the last saved file if the last saved file has a ':' in the title. The last saved file is set irrespective of whether the save was successful or not, and this is recorded in the properties file.

Workaround: delete /rename the offending file/directory with ':' in title in the last saved file directory being opened/viewed.

see peter felker's email exchange around 01/09/2007 about not being able to save or load files.