So i tried to model something on the K-Series but when i load up it shows dat ting : problem is : i didnt change anything other than basic name like etkc and jbeam infos ( i didnt break the car as it is a separate body ) but it took me my time and idk why it's doing this i checked the files but nothing wrong ( in my opinion )
(most likely) your flexbody name doesnt match your model name in the 3d software, another problem is it hasnt exported properly(no assigned texture) or anything like that, open the debug by pressing ' on the keyboard (i hope i said that right) and check if it says (yourname) flexbody missing
sorry for late reply but the "etkc" i think the body would be "etkc_body" or "etkc_chassis" but if you made an adjustment to it or added a model to it yourself you would have to rename it inside of (3d model software) and it should match that in the flexbodies for example if you made a new chassis, you would name it something like "etkc_body2" and same for the flexbody i hope this helps and i hope i understood your post correctly