I added some keys to my registry so .pws files would open with PingPlotter:

Code:
  Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.pws]
@="PingPlotter.Workspace"


[HKEY_CLASSES_ROOT\PingPlotter.Workspace]

[HKEY_CLASSES_ROOT\PingPlotter.Workspace\DefaultIcon]
@="C:\\Program Files\\PingPlotter Pro\\PingPlotter.exe,1"

[HKEY_CLASSES_ROOT\PingPlotter.Workspace\shell]

[HKEY_CLASSES_ROOT\PingPlotter.Workspace\shell\Open]

[HKEY_CLASSES_ROOT\PingPlotter.Workspace\shell\Open\Command]
@="C:\\Program Files\\PingPlotter Pro\\PingPlotter.exe \"%1\""



well this succeeded in getting PWS files to open in PP3, but then PP3 greets me:


why doesn't PP3 accept pws files as command line arguments? It would be very much more convenient to double-click on these files and have them open. any reason?