That popping window is probably DOS starting up, giving an error and closing itself again as it usually does.
So instead, try to start it from CMD:
-Start
-Execute
-type "cmd" and press Enter.
Now type in the adress of Planeshift and press Enter. For example I need to do this:
F: (to go from the C drive to the F drive)
cd F:\development\planeshift\ (to go to the Planeshift folder)
psclient.exe (to startup planeshift)
You can also add parameters such as -debug, so you will type this in CMD:
psclient.exe -debug
When psclient crashes now, it will not close but stay open and display the error in DOS.
By clicking on that "C:\" logo in the upper-left corner of the DOS window you will be able to copy-paste the log into a post.
Try it!
