Error recalling last active module - invalid module name '-1'

[pilehave]

TV-Server Version: RC4
MediaPortal Version: RC4
MediaPortal Skin: MediaStream 16:9
Windows Version: XP Pro SP3
CPU Type: AMD x2 4850e 2.5 GHz 45w
HDD: Samsung Spinpoint 250GB 2.5"
Memory: 4 GB DDR2 800 MHz Dual-Channel
Motherboard: Gigabyte GA-MA78GM-S2H (rev 1.0)
Video Card: Onboard AMD Radeon HD 3200
Video Card Driver: Catalyst 8.8 official
Sound Card: Onboard ALC889A
Sound Card AC3:
Sound Card Driver:
1. TV Card: Terratec Cinergy 2400i DT
1. TV Card Type: DVB-T
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:
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply: picuPSU 120W
Remote: Logitech 885
TV: LG 42PM1MA
TV - HTPC Connection: HDMI

When using a button (not the menu) on myHome.xml to navigate to another window (ie a module), MP RC4 throws this error in the log:

Error recalling last active module - invalid module name '-1'

Well, last active module was never set, because I didn't use the menu to get there! I guess this was not the way it was intended to work, but this problem was introduced with RC4.

MediaPortal.log has some more info:

2008-11-29 20:52:18.897000 [Debug][MPMain]: d3dapp: ShowLastActiveModule active : True
2008-11-29 20:52:18.897000 [Debug][MPMain]: d3dapp: ShowLastActiveModule module : -1
2008-11-29 20:52:18.897000 [Debug][MPMain]: d3dapp: ShowLastActiveModule fullscreen : False