Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.

Hello all,
currently I get the following warning below when executing the simulink model via the command !matlab -nosplash -nojvm -r...
However, when executing the simulink model in simulink, the diagnostic viewer never shows the warning messages.
The only thing i did in between there was merging a finished branch into the trunk by hand (copy and paste simulink subsystems), and I adapted the stateflow logic chart. Do you know how to fix this one ? I would be very happy if someone can help me out with this.
Here you can see the warning message:
Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)
Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)
Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)
Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)
Warning: Model corruption detected: In the MDL file, object #0 cannot be parented by object #0.
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)
Warning: sfdefaults, line 100: Unexpected parameter "linkNode" in "port".
> In sfinit (line 40)
In sfinit (line 14)
In Simulink.slx.PartHandler>@(modelHandle,~)handler.doLoad(modelHandle) (line 31)
In Simulink.slx/PartHandler/pExecute (line 78)
In Simulink.slx/PartHandler/doLoad (line 48)
In Simulink.slx.PartHandlerRegistrar.executeLoadCallbacks (line 46)
In load_system>i_load_system (line 44)
In load_system (line 20)
In Simulink.Simulation.internal/DesktopModelInfo/initialize
In xxx_xxx_xxx (line 12)

Answers (1)

When doing the merge, did you manually edit the MDL file contents? Instead, you can use Simulink's built-in tools to resolve merge conflicts and avoid model file corruptions:

2 Comments

Hi Corey, thanks for your answer. Yes, i did copy subsystems. However, is it also possible this could be a stateflow error message ? As I go back through very old revisions, this warning message remains now. This warning did not occur for older revisions back then. The message remains even when commenting out every stateflow logic. When running the system on another computer with the current pulled version, this message does not appear.

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Asked:

on 2 Jul 2026

Commented:

on 15 Jul 2026 at 16:54

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