• Which the release of FS2020 we see an explosition of activity on the forun and of course we are very happy to see this. But having all questions about FS2020 in one forum becomes a bit messy. So therefore we would like to ask you all to use the following guidelines when posting your questions:

    • Tag FS2020 specific questions with the MSFS2020 tag.
    • Questions about making 3D assets can be posted in the 3D asset design forum. Either post them in the subforum of the modelling tool you use or in the general forum if they are general.
    • Questions about aircraft design can be posted in the Aircraft design forum
    • Questions about airport design can be posted in the FS2020 airport design forum. Once airport development tools have been updated for FS2020 you can post tool speciifc questions in the subforums of those tools as well of course.
    • Questions about terrain design can be posted in the FS2020 terrain design forum.
    • Questions about SimConnect can be posted in the SimConnect forum.

    Any other question that is not specific to an aspect of development or tool can be posted in the General chat forum.

    By following these guidelines we make sure that the forums remain easy to read for everybody and also that the right people can find your post to answer it.

Getting CAT and LOD's to work


Well, this is my last call for help on this.

Attached are the original .asm files, and the .asm files after applying CAT.

The LOD's work just fine until I use CAT, and then they don't show at all. CAN ANYONE PLEASE GIVE ME SOME INSIGHT ON THIS!!!



  • decklights_01.asm
    3.4 KB · Views: 571
  • decklights_01_0.asm
    77.5 KB · Views: 575
  • decklights_01_cat_0.asm
    90.1 KB · Views: 608
  • decklights_01_cat.asm
    3.4 KB · Views: 601
Hi AJ,

Sorry, but sometimes I am too busy to look at other people's problem. I could probably spend all my spare time on that and I also want to spend some time on my tools sometimes.

I had a look at the files, the only weird thing I see is that there are two local variable blocks. I have changed the code so that only the first one is used (the second one was never filled, so those animations would not work).

Let me know if it works,


  • decklights_01_cat.asm
    3.4 KB · Views: 591
  • decklights_01_cat.mdl
    19.1 KB · Views: 603
  • decklights_01_cat_0.asm
    90 KB · Views: 616
Hi Arno,

I'm sorry also to seem like I'm buggin you on this, and I realize you're a busy guy, but the question that I'm asking here is important, and is directly related to your tool.

I ran the .MDL and recompiled the .asm files, and the result is the same. So, it looks as though we have made another discovery of what CAT can and can't do. From the looks of it, other ppl have had the same problem as me, and just didn't press for an answer, so this post should serve as an important piece of information to those of us who run across this problem!

Models with LOD's that include BGL lights won't show once CAT is applied!

I'll try to do another diff later this week, to see if I spot something else. But it seems it is not going to work indeed.