Hi there,
Something very strange is happening to most of my Vfx in our game after we ported to 4.11.
Specifically, a big chunk of my Fx’s emitters will just not display, even though they aren’t disabled in any way.
More weird even is that they display only if I ‘solo’ them.
So now after porting to 4.11 I have about 60% of my entire FX work not displaying.
Is there anything changed in 4.11 that might lead to this?
Please help us,
Regards,
Good to hear we seem not to be the only project with this issue.
Never happened to me in any update yet.
I’m trying to follow the logic behind the problem but there isn’t much 
OK, Try to make new material for emitter which dont work. This solve my problem.
Like, just remaking the materials used into renamed ones?
Solved it.
All my materials that did not have “Separate Translucency” checked had that problem now. Where in the previous engine versions you could have it unticked and still displaying.
I’m having the same problem. It seems to happen when there are multiple emitters, each with different “Separate Translucency” setting in their material. Using only “separate” materials works fine but adding just one non-separate material causes them to be invisible. They are still there in “unlit” mode though.
Hey man, yeah I think the ones that have separate translucency basically cull the others that dont, the alpha and the entire texture. So they will be there but not show up. I just basically turned all of my fx materials to have separate translucency on.
This issue was reported with UE-27502. It has already been fixed internally and will be available in the future release of 4.12.
Thank you!
Tim