becouse of this i cant lunch a game from the springlobby. to give u an easy idea i attached a screenshot of the console message.

before for me it happens at example, becouse my path is at the moment on the desktop on a german winXp ("Dokumente und Einstellungen").
afterwards i tested to change the directory to "D:\Temp\Spring" and whuu it worked with the protable version and now all is fine.

you should be able to fix this bug by easily modifying the precedure wich reads the path out.