When i put the lysa Folder from @Coutie in my ..\rFactor 2\ModDev\Vehicles Folder and open the Showroom, i get this: So it works. I would suggest to rename your Folder ModDev into ModDev_Backup and make a Steam File Verification. That will install a fresh ModDev Folder. Then put the lysa Folder from @Coutie into that new ..\ModDev\Vehicles Folder. Then it should work for you too.
Sorry, but i have to say this here, because it happens too often also in other Threads. That is exactly, why it sometimes is just annoying, to try to help People here in the Forum. I did ask And your Answer was But the Folder from @Coutie don't have the lysa.mas File anymore. So you didn't do what you did say. If you want to get help, please answer correctly! If you don't do it, you just make it unnecessary annoying for the People that try to help. Or i maybe better say "makes it unnecessary annoying for me, at least".
I realized a cube with workflow 01 I desire to change the cube by another form so I made a new GMT file but how to insert it rfactor devmode thank you
It's sometimes hard to understand what you mean. You already did have the Cube visible in the Showroom. So you only have to edit the Spinner Gen File in that Way, that you replace the Cube gmt with the new gmt. And do the same in the Grafics Gen File, to see it on Track too.
I want to replace the cube with another form that I also name test_ cube.gmt there is only to replace with this new file in the maps folder ?
Yes, if the old and the new gmt have the same Name, just replace/overwrite the old with the new one. And if you want to add a complete new gmt, you have to link it in all Gen Files, to get it showing up in the Showroom and on Track. And you also have to put all Textures, that your gmt are using, into the Maps Folder, or however your Folder is called, where the gmt and Textures are stored.