The Crashdump Viewer is a WxWidgets based tool for browsing Erlang crashdumps.
See the user's guide for more information about how to get started with the Crashdump Viewer.
This function starts the crashdump_viewer GUI and loads the given crashdump.
If File is not given, a file dialog will be opened where the crashdump can be selected.
This function stops the crashdump_viewer and closes all GUI windows.