I guess we'll have to analyse some debug output here. The release client does not create a lot of output, unless we enforce that with command line parameters. Start a console window (Win+R: cmd.exe), move to the PlaneShift installation path with the "cd" command, and type there:

psclient.exe --console --verbose=-scf

You will have to mouse-select and copy the debug output in the created console window via the system menu (dropping from the icon in the top left corner of its window). Unfortunately it is not possible to redirect this generated console into a text file. But you may also find some of it in a file called "errorlog.txt" (possibly not everything, though).

An immediate crash was often related to the sound settings (Software vs. OpenAL). In general you should prefer "OpenAL" when the Creative OpenAL installer worked successfully.