Yes my images are CDI images. Maybe your version of nulldc is different and something has changed from my version to yours? As I mentioned before, I am not using the latest version.
The command line I posted previously is a copy and paste straight from Mala. Farther below is a copy and paste of my nulldc.cfg. Have you refreshed your main game list lately? Have you gone into Mala gamelist editor on a specific game and check that it lists the image name for that particular game? Sometimes gamelists do not get refreshed properly for some reason.
Are you able to get nulldc to run from a "command line" successfully? Its important to be able to do that before worrying about setting it up in Mala. If you can get nulldc to load an image from a command line, post the command line that you used and we'll help you set it up in Mala. Something like the following from a command line works for me:
e:
cd \emulators\nulldc
nulldc -config ImageReader:defaultImage="g:\dreamcast_images\Buzz Lightyear.cdi"
As you can see my nulldc is located on drive e and my images are on drive g. So yours will be quite different.
Of course yours will be different because your images' path, image name, and image extension is different from mine. Get it to work outside of Mala (from a command line) first.
;; nullDC config file;;
[ImageReader]
defaultImage=defualt.cdi
PatchRegion=0
LoadDefaultImage=1
[nullDC]
Dynarec.Enabled=1
Dynarec.DoConstantPropagation=1
Dynarec.UnderclockFpu=0
Dreamcast.Cable=2
Dreamcast.RTC=1827274627
Emulator.AutoStart=1
[nullDC_plugins]
GUI=nullDC_GUI_Win32.dll
Current_PVR=nullPvr_Win32.dll
Current_GDR=nullGDR_Win32.dll
Current_AICA=ElsemiAICA_Win32.dll
Current_ExtDevice=nullExtDev_Win32.dll
Current_maple0_5=drkMapleDevices_Win32.dll:0
Current_maple1_5=NULL
Current_maple2_5=NULL
Current_maple3_5=NULL
Current_maple0_0=drkMapleDevices_Win32.dll:2
Current_maple0_1=drkMapleDevices_Win32.dll:2
Current_maple0_2=NULL
Current_maple0_3=NULL
Current_maple0_4=NULL
Current_maple1_0=NULL
Current_maple1_1=NULL
Current_maple1_2=NULL
Current_maple1_3=NULL
Current_maple1_4=NULL
Current_maple2_0=NULL
Current_maple2_1=NULL
Current_maple2_2=NULL
Current_maple2_3=NULL
Current_maple2_4=NULL
Current_maple3_0=NULL
Current_maple3_1=NULL
Current_maple3_2=NULL
Current_maple3_3=NULL
Current_maple3_4=NULL
[drkpvr]
Emulation.AlphaSortMode=1
Emulation.PaletteMode=1
Emulation.ModVolMode=1
OSD.ShowFPS=0
OSD.ShowStats=0
Fullscreen.Enabled=1
Fullscreen.Res_X=800
Fullscreen.Res_Y=600
Fullscreen.Refresh_Rate=60
Enhancements.MultiSampleCount=0
Enhancements.MultiSampleQuality=0
Enhancements.AspectRatioMode=1
[nullAica]
BufferSize=2048
LimitFPS=1
HW_mixing=0
SoundRenderer=1
GlobalFocus=0
BufferCount=1
CDDAMute=0
GlobalMute=0
[nullExtDev]
mode=0
adapter=0
[ndc_hookjoy]
PortA_CONT_C=66
PortA_CONT_B=88
PortA_CONT_A=86
PortA_CONT_START=16
PortA_CONT_DPAD_UP=38
PortA_CONT_DPAD_DOWN=40
PortA_CONT_DPAD_LEFT=37
PortA_CONT_DPAD_RIGHT=39
PortA_CONT_Z=77
PortA_CONT_Y=90
PortA_CONT_X=67
PortA_CONT_DPAD2_UP=0
PortA_CONT_DPAD2_DOWN=0
PortA_CONT_DPAD2_LEFT=0
PortA_CONT_DPAD2_RIGHT=0
PortA_CONT_ANALOG_UP=73
PortA_CONT_ANALOG_DOWN=75
PortA_CONT_ANALOG_LEFT=74
PortA_CONT_ANALOG_RIGHT=76
PortA_CONT_LSLIDER=65
PortA_CONT_RSLIDER=83
PortB_CONT_C=66
PortB_CONT_B=88
PortB_CONT_A=86
PortB_CONT_START=16
PortB_CONT_DPAD_UP=38
PortB_CONT_DPAD_DOWN=40
PortB_CONT_DPAD_LEFT=37
PortB_CONT_DPAD_RIGHT=39
PortB_CONT_Z=77
PortB_CONT_Y=90
PortB_CONT_X=67
PortB_CONT_DPAD2_UP=0
PortB_CONT_DPAD2_DOWN=0
PortB_CONT_DPAD2_LEFT=0
PortB_CONT_DPAD2_RIGHT=0
PortB_CONT_ANALOG_UP=73
PortB_CONT_ANALOG_DOWN=75
PortB_CONT_ANALOG_LEFT=74
PortB_CONT_ANALOG_RIGHT=76
PortB_CONT_LSLIDER=65
PortB_CONT_RSLIDER=83
PortC_CONT_C=66
PortC_CONT_B=88
PortC_CONT_A=86
PortC_CONT_START=16
PortC_CONT_DPAD_UP=38
PortC_CONT_DPAD_DOWN=40
PortC_CONT_DPAD_LEFT=37
PortC_CONT_DPAD_RIGHT=39
PortC_CONT_Z=77
PortC_CONT_Y=90
PortC_CONT_X=67
PortC_CONT_DPAD2_UP=0
PortC_CONT_DPAD2_DOWN=0
PortC_CONT_DPAD2_LEFT=0
PortC_CONT_DPAD2_RIGHT=0
PortC_CONT_ANALOG_UP=73
PortC_CONT_ANALOG_DOWN=75
PortC_CONT_ANALOG_LEFT=74
PortC_CONT_ANALOG_RIGHT=76
PortC_CONT_LSLIDER=65
PortC_CONT_RSLIDER=83
PortD_CONT_C=66
PortD_CONT_B=88
PortD_CONT_A=86
PortD_CONT_START=16
PortD_CONT_DPAD_UP=38
PortD_CONT_DPAD_DOWN=40
PortD_CONT_DPAD_LEFT=37
PortD_CONT_DPAD_RIGHT=39
PortD_CONT_Z=77
PortD_CONT_Y=90
PortD_CONT_X=67
PortD_CONT_DPAD2_UP=0
PortD_CONT_DPAD2_DOWN=0
PortD_CONT_DPAD2_LEFT=0
PortD_CONT_DPAD2_RIGHT=0
PortD_CONT_ANALOG_UP=73
PortD_CONT_ANALOG_DOWN=75
PortD_CONT_ANALOG_LEFT=74
PortD_CONT_ANALOG_RIGHT=76
PortD_CONT_LSLIDER=65
PortD_CONT_RSLIDER=83
local_port=0
server_addr=192.168.1.33
server_port=11122
[nullMaple]
ConfigMap.Count=2
ConfigMap[1].Guid={6F1D2B60-D5A0-11CF-BFC7-444553540000}
ConfigMap[1].Name=Mouse
ConfigMap[1].DeviceGuid={6F1D2B60-D5A0-11CF-BFC7-444553540000}
ConfigMap[1].DeviceName=Mouse
ConfigMap[1].State=0
ConfigMap[1].Map[0].Type=0
ConfigMap[1].Map[0].Source=0
ConfigMap[1].Map[1].Type=0
ConfigMap[1].Map[1].Source=0
ConfigMap[1].Map[2].Type=0
ConfigMap[1].Map[2].Source=0
ConfigMap[1].Map[3].Type=0
ConfigMap[1].Map[3].Source=0
ConfigMap[1].Map[4].Type=0
ConfigMap[1].Map[4].Source=0
ConfigMap[1].Map[5].Type=0
ConfigMap[1].Map[5].Source=0
ConfigMap[1].Map[6].Type=0
ConfigMap[1].Map[6].Source=0
ConfigMap[1].Map[7].Type=0
ConfigMap[1].Map[7].Source=0
ConfigMap[1].Map[8].Type=0
ConfigMap[1].Map[8].Source=0
ConfigMap[1].Map[9].Type=0
ConfigMap[1].Map[9].Source=0
ConfigMap[1].Map[10].Type=0
ConfigMap[1].Map[10].Source=0
ConfigMap[1].Map[11].Type=0
ConfigMap[1].Map[11].Source=0
ConfigMap[1].Map[12].Type=0
ConfigMap[1].Map[12].Source=0
ConfigMap[1].Map[13].Type=0
ConfigMap[1].Map[13].Source=0
ConfigMap[1].Map[14].Type=0
ConfigMap[1].Map[14].Source=0
ConfigMap[1].Map[15].Type=0
ConfigMap[1].Map[15].Source=0
ConfigMap[1].Map[16].Type=0
ConfigMap[1].Map[16].Source=0
ConfigMap[1].Map[17].Type=0
ConfigMap[1].Map[17].Source=0
ConfigMap[1].Map[18].Type=0
ConfigMap[1].Map[18].Source=0
ConfigMap[1].Map[19].Type=0
ConfigMap[1].Map[19].Source=0
ConfigMap[1].Map[20].Type=0
ConfigMap[1].Map[20].Source=0
ConfigMap[1].Map[21].Type=0
ConfigMap[1].Map[21].Source=0
ConfigMap[1].Map[22].Type=0
ConfigMap[1].Map[22].Source=0
ConfigMap[1].Map[23].Type=0
ConfigMap[1].Map[23].Source=0
ConfigMap[1].Map[24].Type=0
ConfigMap[1].Map[24].Source=0
ConfigMap[1].Map[25].Type=0
ConfigMap[1].Map[25].Source=0
ConfigMap[2].Guid={6F1D2B61-D5A0-11CF-BFC7-444553540000}
ConfigMap[2].Name=Keyboard
ConfigMap[2].DeviceGuid={6F1D2B61-D5A0-11CF-BFC7-444553540000}
ConfigMap[2].DeviceName=Keyboard
ConfigMap[2].State=0
ConfigMap[2].Map[0].Type=0
ConfigMap[2].Map[0].Source=0
ConfigMap[2].Map[1].Type=0
ConfigMap[2].Map[1].Source=0
ConfigMap[2].Map[2].Type=0
ConfigMap[2].Map[2].Source=0
ConfigMap[2].Map[3].Type=0
ConfigMap[2].Map[3].Source=0
ConfigMap[2].Map[4].Type=0
ConfigMap[2].Map[4].Source=0
ConfigMap[2].Map[5].Type=0
ConfigMap[2].Map[5].Source=0
ConfigMap[2].Map[6].Type=0
ConfigMap[2].Map[6].Source=0
ConfigMap[2].Map[7].Type=0
ConfigMap[2].Map[7].Source=0
ConfigMap[2].Map[8].Type=0
ConfigMap[2].Map[8].Source=0
ConfigMap[2].Map[9].Type=0
ConfigMap[2].Map[9].Source=0
ConfigMap[2].Map[10].Type=0
ConfigMap[2].Map[10].Source=0
ConfigMap[2].Map[11].Type=0
ConfigMap[2].Map[11].Source=0
ConfigMap[2].Map[12].Type=0
ConfigMap[2].Map[12].Source=0
ConfigMap[2].Map[13].Type=0
ConfigMap[2].Map[13].Source=0
ConfigMap[2].Map[14].Type=0
ConfigMap[2].Map[14].Source=0
ConfigMap[2].Map[15].Type=0
ConfigMap[2].Map[15].Source=0
ConfigMap[2].Map[16].Type=0
ConfigMap[2].Map[16].Source=0
ConfigMap[2].Map[17].Type=0
ConfigMap[2].Map[17].Source=0
ConfigMap[2].Map[18].Type=0
ConfigMap[2].Map[18].Source=0
ConfigMap[2].Map[19].Type=0
ConfigMap[2].Map[19].Source=0
ConfigMap[2].Map[20].Type=0
ConfigMap[2].Map[20].Source=0
ConfigMap[2].Map[21].Type=0
ConfigMap[2].Map[21].Source=0
ConfigMap[2].Map[22].Type=0
ConfigMap[2].Map[22].Source=0
ConfigMap[2].Map[23].Type=0
ConfigMap[2].Map[23].Source=0
ConfigMap[2].Map[24].Type=0
ConfigMap[2].Map[24].Source=0
ConfigMap[2].Map[25].Type=0
ConfigMap[2].Map[25].Source=0
Port0={481E6345-C2DA-4EF5-B819-5DF87D64E9E2}
Port1={481E6345-C2DA-4EF5-B819-5DF87D64E9E2}
Port2={481E6345-C2DA-4EF5-B819-5DF87D64E9E2}
Port3={481E6345-C2DA-4EF5-B819-5DF87D64E9E2}
[ElsemiAICA]
SyncAudio=1
[chankast_pvr]
Use_ZWrite=0
Use_AlphaTest_ZWrite=1
ShowStats=0
Wireframe=0
Width=640
Height=480
ForceSoftwareVertexProceccing=0
MultiSampleCount=0
MultiSampleQuality=0
FullScreen=1