Impossible to add car xxx (uid :200000)

What I did to make lights work and avoid the uid error in MSTS :

1 Export with lights
2 Get lights coordinates from MSTS eng file
3 Export without lights
4 Add lights section in eng file (taken from another train) with the coordinates of step 2

I regularly export my model to MSTS and had no problem until now (shape viewer showed around 9800 polygons).

It is impossible to load the car in MSTS because of this ‘uid :200000’ error (shape viewer now shows 10059 polygons; the model is OK in shape viewer).

I have a few backups since the last time it worked in MSTS.

Thanks in advance for your help.

[img:1adaaur4]http://www.imageshack.us[/img:1adaaur4]
[img:1adaaur4]http://img204.exs.cx/img204/8720/z6400017pd.jpg[/img:1adaaur4]

This error can be caused by too many polys (not in your case), corrupt part/s, part/s being too complex for the game engine, too many points in the one location or co-planar faces or even too many polys per group.

Try and move your group hierarchy around to distibute the facet count to between 2,000-3,000 per group, not including child groups. I find that mine max out at around 11,500-12,000 polys per shape file.

Often with these errors its a matter of hunt and find. I’d look at your last working model that loaded into the sim and then see what changes or addtions you did to it since then. It may take a while to do but its worth it. <!– s:) –><img src="{SMILIES_PATH}/icon_e_smile.gif" alt="" title="Smile" /><!– s:) –>

Nice model btw.

most likely too many polys in a group.

You can check the count in each group by using the right click on an object in a group and ‘Select Group’.
Then run the count triangles plugin – if you have any groups over 2000-3000 then move some of the objects into a child group.

Thanks.
The problem certainly was related to group but in a strange way.

I regrouped 3 objects which were at the top of the hierarchy under one group.
And after export it works !!!

Before the change, print hierarchy was starting with :

3DC Hierarchy for Main
+ Main Relative Pos. 5,120623 ,-1,500318 , 6,324167
– Underframe1 16 Points 4 Faces
— Bogies.TGA Amb 20 Spec 85 Trn 2
– Underframe2 16 Points 4 Faces
— Bogies.TGA Amb 20 Spec 85 Trn 2
+ Bogie1 Relative Pos. -6,877422E-03 , 0,9103183 ,-7,723335
– Bogie 8 Points 5 Faces

After the change, print hierarchy now starts with :
3DC Hierarchy for Z6400DTLm_LT
+ Z6400DTLm_LT Relative Pos. 0 , 0 , 0
+ Camera Relative Pos. 5 , 1 , 0
+ Unavailable Relative Pos. 0 , 0 , 0
+ Unavailable Relative Pos. 0 , 0 , 0
+ Unavailable Relative Pos. 0 , 0 , 0
+ Point Light Relative Pos. 6,2775 , 3,0425 , 0,9275
+ Main Relative Pos. 5,120623 ,-1,500318 , 6,324167
– Underframe1 16 Points 4 Faces
— Bogies.TGA Amb 20 Spec 85 Trn 2
– Underframe2 16 Points 4 Faces
— Bogies.TGA Amb 20 Spec 85 Trn 2
+ Bogie1 Relative Pos. -6,877422E-03 , 0,9103183 ,-7,723335

Anyway, now I am not going to touch anything.
I need to do lights, coordinate system adjustment, door animation.
Next will come non 3DC stuff : cab creation.

I had to change the model to add 4 lights and again I have the problem !

Very annoying.
I need again to try randomly to find a way to remove the problem.

Seems like an export bug to me.

When removing the lights, the problem is gone.