The following error appeared in console and log file when running in playmode.
It must be related to a particle system.
This is the first time I’ve seen this error
Assertion failed on expression: ‘all(sheetIndexNormalized >= 0.0f) && all(sheetIndexNormalized <= 1.0f)’
(Filename: C:/buildslave/unity/build/Runtime/ParticleSystem/ParticleSystemGeometryJob.cpp Line: 1190)
Does anyone know what this error means?
I’m using Unity 2017.1.1f1
Sounds like maybe an issue with the uv texture Module? Have you upgraded unity version? Maybe something didn’t upgrade correctly.
By the way if you use the Particles tag in forum posts the particle team gets notified 
Sorry I should have made it clear, i`m part of the particle team 
I just happened to notice the post but in the future using the particles tag means it should not get missed.
It does look like an issue with the UV Module. Did you upgrade Unity version recently?
Thanks for responding to this thread. (I added the “particles” tag to the thread).
I have not upgraded Unity for many months. The error just appeared during one session, and hasn’t returned since. I can’t seem to re-produce the error again.
If it happens again, I will re-evaluate all of the UV Modules.
Thanks for the suggestion of what to focus on regarding this error.
I just got the same error in 2017.3.0f3. It was a new project – not one in an updated version.
Please file a bug report so we can investigate. The more info the better.
This error just popped up for me for the first time. Using latest 2017.3.1p1
We are currently experiencing this issue in 2017.3.1p2 . The issue occurs on loading into and out of our game from our front end (which will load and unload several sprite sheet textures each iteration for hud elements etc), but only on the 3rd time of us loading into the game, but always at this time. This causes on editor builds lots of error spam but continued operation, on XBoxOne it causes an access violation and hard crashes. Since the error message is so non descriptive (no call stack, no index counts, no index it tried to access) its extremely difficult to work out which asset could be the root of the error, especially since they all seem to work multiple times before eventually causing a failure.
2018.3.13f1 get this error
2017.4.30f1 get this error
Please file a bug report.
2017.4.32f1 get this error.
Plz Fix it!!
just Error in console. i can’t find where error is comming
Please file a bug report. We need something to work with. We can’t fix the bug from the error message, we need to know what’s causing it to happen and for that we need a bug report with a project that has this error included.
I get this error when attempting to use Triggers module with particles.
Any progress on this issue ?
I’m using Unity 2018.2.17f1 and got
Assertion failed on expression: ‘all(sheetIndexNormalized >= 0.0f) && all(sheetIndexNormalized <= 1.0f)’
…
(Filename: C:/buildslave/unity/build/Runtime/ParticleSystem/ParticleSystemGeometryJob.cpp Line: 1472)
I just got it once today, not easily reproducible but it crashed my app.
Is it a development only assertion ?
Is there any common mistake to avoid when using the ParticuleSystem ?
Could you please file a bug report?
Version 2017.4.35f1
In our game
After 12 hours of testing, A total of 137 times.
There were 10 to 20 errors at a time.
The cause is unknown.
It’s hard to find because there’s no error stacks
Have you filled a bug report?
Hi Karl,
I have the same issue I think, in Unity 2017.4 .
I have filled a repro project with that kind of error narrowed down: Case 1235478
Thank you for having a look at it^^.
