Trouble with converting .blend into .j3o

Hi everyone, I’m a complete noob to jmonkey and I’ve tried everything to try to solve it by going through forums and the wiki but to no avail. I’ve tried install ogreXML and right clicking to convert to .j3o but I just run into a giant wall of errors:

"An Exception has occured when trying to load asset UVSphere
com.jme3.asset.AssetLoadException: An exception has occurred while loading asset: Models/UVSphere.blend
at com.jme3.asset.DesktopAssetManager.loadLocatedAsset(
at com.jme3.asset.DesktopAssetManager.loadAsset(
at com.jme3.asset.DesktopAssetManager.loadModel(
at com.jme3.gde.core.assets.SpatialAssetDataObject.loadAsset(
at com.jme3.gde.core.assets.actions.ConvertModel$
Caused by: Unexpected importer exception occurred: null
at com.jme3.scene.plugins.blender.BlenderLoader.load(
at com.jme3.scene.plugins.blender.BlenderLoader.load(
at com.jme3.asset.DesktopAssetManager.loadLocatedAsset(
… 5 more
Caused by: java.lang.NullPointerException
at com.jme3.scene.plugins.blender.textures.blending.TextureBlenderAWT.blend(
at com.jme3.scene.plugins.blender.textures.CombinedTexture.blend(
at com.jme3.scene.plugins.blender.textures.CombinedTexture.flatten(
at com.jme3.scene.plugins.blender.materials.MaterialContext.applyMaterial(
at com.jme3.scene.plugins.blender.meshes.TemporalMesh.prepareFacesGeometry(
at com.jme3.scene.plugins.blender.meshes.TemporalMesh.toGeometries(
at com.jme3.scene.plugins.blender.objects.ObjectHelper.toObject(
at com.jme3.scene.plugins.blender.BlenderLoader.load(
… 7 more

Any help would be greatly appreciated! Sorry as I know this question is asked a lot here.

ogreXML(that is like deprecated) do not work for Blender 2.8+ version.
it work only for Blender 2.79 or earlier.

what i suggest is to use new export standard in game industry:
GLTF is already available in Blender 2.8.

Please also note, it use PBR material once exported, so if you want old Phong lightning, then you need replace material manually via code or SDK.

if you also need export animations using GLTF, then you need prepare NLA track properly in blender for export. Everything should be in wiki link. (NLA track need to have each animation in new Track)