Win 7 x64 - Cannot get in to MP Configuration, it just freezes (1 Viewer)

[rockingondrums]

MediaPortal Version: 1.1.0 RC3
MediaPortal Skin: StreamedMP
Windows Version: Windows 7 x64 (64 bit)
CPU Type: E7400 Core 2 Duo
HDD: Hitachi Deskstar 2 TB, Seagate 1 TB, Western Digital 250 GB
Memory: 3 GB
Motherboard: Gigabyte Easy Energy Saver
Video Card: ATI Radeon HD 4550
Video Card Driver: Whatever ATI Catalyst Control center installed...
Sound Card: On board motherboard audio
Sound Card AC3:
Sound Card Driver:
1. TV Card:
1. TV Card Type:
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
Regarding the codecs below, I just followed the mediaportal install guide on avn forums, so whatever was set by default after haali media splitter and ffdshow were installed.
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply:
Remote: MCE 2005
TV: 32" LCD HDTV with hdmi
TV - HTPC Connection: