I don't really know how to fix my problem so I hope someone here will know

I'm using the last version of subsonic (4.8 (build 3434) – April 17, 2013)
My server version is "jetty-6.1.x, java 1.7.0_45, Windows 7 (34.2 MB / 50.0 MB)"
I'm on Windows 7 Pro SP1 x64
My memory limit is 150MB with 34MB used
I've installed Subsonic on "D:\Program Files (x86)\Subsonic"
If you need more informations, just ask.
Thank you for your future help, have a nice day.