Root element is not a JSON object

[NotBasti]

Hello everyone, I just created my second blender model and wanted to test it out in msfs but then I got these error messages

 

[Anthony31]

Is there a .bin, .gltf and .xml in your package source folder? And what are there sizes?

Providing the blender file is not useful. The issue is what has been exported and if you have exported the files correctly.

 

[NotBasti]

yes, there are. Should I upload them?

 

[Anthony31]

These are just suggestions, I can't guarantee they work.

xml has no space, gltf and bin have a space in their filenames. I'd try to avoid having spaces in my file names but that's just me. I'd also avoid having them as different names (which the extra space does). You can open the gltf in a text editor and check that "export_xml_file" correctly addresses the xml file and at the bottom of the file the "uri" correctly calls the .bin file. Having said that I'd re-export the model making sure the xml and bin and gltf files all have the same file names rather than try to edit the files directly. Unless you really know what you are doing you can just end up making things worse when it's just easier to export the files again.

 

[NotBasti]

Ok, so I can open the gltf in windows 3d viewer, but I get this message in the sim

I tried adding the missing bracket near line 3, as it said. But then I wasn't able to open the file in 3d viewer anymore and got the same message as before.

 

[NotBasti]

Maybe i'm just using the wrong export settings. I've seen multiple youtubers use different settings, what should I use?

 

[Peter Hornfeck]

Follow this short video:

This works fine. Batch Export will not work so far. If you make a model in Blender, you could make 3 models, one full detailed and 2 others as lower LOD models.
For example mymodel, mymodel-LOD01, mymodell-LOD02.
Only select one of the models and export it to the folder mymodel in modelLib. Do this with all of your 3 models.
Next open the xml file and change it to something like this:

<?xml version="1.0" ?>
<ModelInfo guid="{fee6bacb-5bcc-474d-g6a3-b73282d1081}" version="1.1">

<LODS>

<LOD ModelFile="mymodel.gltf" minSize="8"/>

<LOD ModelFile="mymodel-LOD01.gltf" minSize="4"/>

<LOD ModelFile="mymodel-LOD02.gltf"/>

</LODS>

</ModelInfo>

The gltf model could not be opened with the 3d viewer. If you can see your model in the 3dviewer of windows, it has the wrong format.

 

[NotBasti]

I only have one model right now, what should I do instead?

My xml file looks like
<?xml version="1.1" ?>
<ModelInfo version="1.1">
</ModelInfo>

 

[Peter Hornfeck]

You must set create GUID in the exporter window. You can find this in MSFS

 

[Peter Hornfeck]

Then it should look like this

<?xml version="1.0"?>
<ModelInfo version="1.1" guid="{9e7af85b-0fd9-4640-2c6c-ab2850e206b2}"/>

 

[Anthony31]

OK, I loaded your original blender model and exported it.

In the export settings I turned Geometry - Tangents OFF (there is an error with it on as MSFS does not support tangents)

Man, you need to clean this model up. You don't need polygons on the undersides of buildings. That's just wasted frames. And reset the scaling on your parts. Cube.001 has negative scaling which is not good.

Here are the exported files. They compile into a library although I don't know what they look like in sim.

 

[Peter Hornfeck]

The error you get above will be from a wrong path. You must compare the path and name of the model which is shown in the message with the real name of model and path in your explorer.
I had some errors when I use _ character. Not sure, but maybe it is also case sensitive, not sure about that. You are German, right? I also from Germany and use only windows with language setting to English. Because some tools and exporters have problems with , or . as decimal in sizes. And sometimes models can crash simulators if you use ä or ü or something like that. I had this problem when someone used my model on a japanese windows.
Before you export models from Blender, right click and apply rotation and scale. And clean your models, for example merge vertices by distance.

 

[NotBasti]

OK, I loaded your original blender model and exported it.

In the export settings I turned Geometry - Tangents OFF (there is an error with it on as MSFS does not support tangents)

Man, you need to clean this model up. You don't need polygons on the undersides of buildings. That's just wasted frames. And reset the scaling on your parts. Cube.001 has negative scaling which is not good.

Here are the exported files. They compile into a library although I don't know what they look like in sim.

First of all, thank you!
Yes, indeed. There is still lots of work to do and i'm still quite a beginner. I will test the files out later

 

[NotBasti]

The error you get above will be from a wrong path. You must compare the path and name of the model which is shown in the message with the real name of model and path in your explorer.
I had some errors when I use _ character. Not sure, but maybe it is also case sensitive, not sure about that. You are German, right? I also from Germany and use only windows with language setting to English. Because some tools and exporters have problems with , or . as decimal in sizes. And sometimes models can crash simulators if you use ä or ü or something like that. I had this problem when someone used my model on a japanese windows.
Before you export models from Blender, right click and apply rotation and scale. And clean your models, for example merge vertices by distance.

Ok, thank you for all this advice! You two really helped me out!