Well I got it loading now, but only in playback mode and the camera needed a really long time to boot up. When I press half shutter there i get an error "unknown propset 8". In Shooting mode CHDK is not loaded and I can't take any pictures.
I can't really work out what might be happening.
"unknown propset 8" probably comes from a script and might indicate that old CHDK files are on that card.
Try re-formatting the card, make it bootable and extract a complete build from
http://mighty-hoernsche.de/trunk/ .
The main part of the ROM matches the 100h dump we have. I found a romlog in it that does not seem CHDK related. The log part seems a bit unusual (may have happened while the cam was in a Canon service):
00010870: MoveFocusDistance
00010880: StopISDrive
00010890: InitializeAdjustmentFunction
00011060: GetZoomTelePoint
00011070: MoveFocusToTerminate
00011140: MoveZoomPoint
00053450: MoveFocusToTerminate
00053450: MoveFocusToTerminate
00053450: ResetZoomToTerminatePoint
00055590: M:ZM_RST
00055870: InitializeAdjustmentFunction
00055870: SetWindowSystemDrawSetting
00055880: GetYear
00055880: Driver.Create
00055890: GetSDDetect
00055890: Driver.Create
00055890: GetSDDetect
00055890: Driver.Create
00055900: GetSDDetect
00055900: GetModeDialState
00055910: GetVBatVoltage
00056100: UI:Button:0x0000112B:
00056140: DeviceUniqueIDCheckSum
00056150: System.Create
00056150: RomCheckSum
00056150: RomCheckSum
00056690: RomCheckSum
00056870: RomCheckSum
00056880: RomCheckSum
00056880: RomCheckSum
00056890: System.Create
00056900: RomCheckSum
00056900: RomCheckSum
00057270: SetFactorySerialNumber
00057270: LoadFactoryNumber
00057280: LoadSerialNumber
00057290: ClearDUIDFixFlag
00057380: WRITEADJUSTMENTDATATOFROM
00057550: UI_RegistDebugEventProc
00057570: ExecuteResetFactory
00057580: UI:VTMLock
00057580: UI:VTMUnLock
00057580: UI:DSIC:a8,0
00057580: UI:DSIC:11b,0
00057600: ExecuteShutDownPropertyService
00057790: LoadFactoryNumber
00057790: LoadSerialNumber
00057800: RefreshAdjustmentTableMirror
00057800: IsDUIDFixFlag
00057870: MoveLensToTerminatePoint
00057870: M:TERM_S
00057870: M:ZM_RST_S
00058560: M:ZM_RST_E
00058560: M:ZM_TRM_S
00058660: M:ZM_TRM_E
00058660: M:IR_TRM_S
00058670: M:IR_TRM_E
00058800: M:IS_PWS_S
00058800: M:IS_PWS_E
00058800: M:TERM_E
00060080: UI:Button:0x000010B4:DisconnectUSBCable
00060080: UI:USBDisconnect
00060080: PTPRspnd.ShutDownPTPFrameworkClient
00060090: UI:LogicalEvent:0x00001182:adr:0,Para:0
00060090: UI:AC:ShtPC
00060090: UI:TurnOnDisplay
00060310: UI:DispSwCon_DisableMute
00060310: UI:DispSw: Start
00060310: UI:DSIC:e2,0
00060310: UI:SetDisplayType
00060310: UI:VTMLock
00060310: UI:DispSw: After
00060310: UI:VTMUnLock
00060320: UI:DispSwCon_TurnOnBackLight
00060320: UI:TurnOnBackLight
00060320: UI:Window MuteOff
00060320: UI:MuteOffPhysicalScreen
00060320: UI:DispSw: Done
00060320: UI:TurnOffBackLight
00060320: UI:TurnOnBackLight
00060320: UI:AC:InitPB
00060320: UI:DCIC:0,16388
00060320: UI:_BeforeCBRForPlay
00060320: UI:_AfterCBRForPlay
00060320: UI:ExtMicCon::ExtMicCon_NotifyRecMode
00060320: SS:ToPlay
00060320: UI:AC:StartPB[2]
00060320: UI:DispSwCon_TurnOnDisplayDevice
00060320: UI:PB.Start
00060320: UI:VTMLock
00060320: UI:PB.Create
If you can't get the large cards to work, try something small (up to 16GB).
BTW, does the cam work without issues if CHDK is not loaded?