If you try to launch SheepShaver and nothing happens or if a window very quickly opens and then closes, it usually means the VOLUMES paths and/or the ROM path are wrong.

In SheepShaverGUI2.exe under the VOLUMES tab, make sure all the files are properly named and that all the files exist, remove and re-add them if necessary.  Under the MEMORY/MISC tab, make sure the ROM file path is correct.
