Explode error in assy

[INFOJWJJ2]

Hello

Does anybody have face a problem like this.

As you can see all my assy is rigid it used to work fine but the last 2 months i have face this issue lot's of times.Now is even worst,you can see critical error in the right corner but in the history panel there is no error.

What can I do?

[TrippyLighting]

An you shar that assembly?

If you can, please export it as a .f3z and attach it to a post.

If you use a paid subscription, you can also share the link to the design (make sue download is enabled).

[INFOJWJJ2]

I design everything separated and I used all parts in the main assy like a chain.

Yes I am having a paid subscription,where I can find this?

[TrippyLighting]

The first thing I a am noticing is that very late in the timeline you are moving the single body in the design into a subcomponent.

There is only one subcomponent in the design and that is unnecessary.

If you were going to add more subcomponents, you should use the ground-to-parent attribute to fix that component to the top-level origin.

Edit: I can see that you continue that throughout the design. This additional level is not needed and complicates things.

[INFOJWJJ2]

I agree with the first one. But I don't think that this is the reason for my problem maybe is something like a bug. If you see in the whole assy is everything rigid with no errors. Today is better, in the attached photos you can see :

photo No2 in my data panel you see everything ok

No3 when I am oppening my design model you see everything explode

but today when I am touching something and try to move it then everything comes to normal.

Weird...

[TrippyLighting · Accepted solution]

There is indeed a bug here that "explodes" the assembly (I reported it a while ago), but it is only a one-time effect. If you run a Modify ->compute all, then everything snaps into the assembled state. 

However, your assembly is still not properly assembled and that has very much to do with the ground-to-parent attribute you did not utilize in your design!
I explain why and how in the screen recording:

[INFOJWJJ2]

Thank you very much it was very helpfull your video to undestand those mistakes. Moreover I update my GPU and also I found that it wasn't working during the procces so I enable it from my windows,now my programm running for sure faster.