This is my VERY first try on 3D with Blender. I simply want a civ5 Cannon for my civ6 (which having longer barrel than Civ6 Field Cannon. i've already compared the two side by side in Asset Editor viewing tool). But the cannon which i've got from Download sections of Civfanatics comes in ONE PIECE--a cannon, a crew, and a sarge wearing bicornes (and he looked alot like Napoleonic officiers at 1800s) just like any other Civ5 3d assets (i've heard that, many assets were converted later on). I've exported the *.fgx files into CN6, imported into blender and the did the simplest thing I believe it should work, a simple crew removal (I had no love of these pre made crews since they're always whites which sorely contradicts to the Civ6 features where all human elements varies on a civ he/she's a member of. And Civ6 standard Assets of each versions have a two different methods to do so). I did save the files into Blender default extensions, and exported. This is what happens Tell me why this error comes?(text box to the upper right corner said there are errors of some sort) And what are solutions for this? I already used Field Cannon for other units, and I've already used community made 3d assets on a couple of units without meddling with 3d programming and no problems beyond asset dependency missings and i've already got Trebuchet, Longswordsmen, and Renaissance heavy cav up and running (these assets are made by Deliverator) These are Deliverator assets that worked impressively well. The error precluded any possibility to reimport *.CN6 into *.fgx, preventing any efforts to use the assets in the same way as any other Civ6 assets. I don't know how Deliverator successfully removed Civ5 Trebuchet crew so the asset will be fit for Civ6? What did I do wrong? and what should I do next? Does it has anything to do with improper Civ6 Nexus add on installations for Blender?