Undo error when working with 9 terrain textures

I'm getting the following error whenever I try painting on my terrain with 9 textures present in the paint texture editor. Not sure if this is as intended? I never get this error any other time when working with terrains. Then if I try painting with the 9th texture and then use undo it leaves a black texture in the textures place.

Code (csharp):

1.  
2. Failed to create Object Undo, because the action is too large. Clearing undo buffer
3. UnityEditor.DockArea:OnGUI()
4.  

 

I am still getting this error and now its happening randomly on one of my terrains that only has 7 textures. Very frustrating... Could this be a memory issue ?

 

Thank you for your answer. Hopefully it will be fixed in the future. I guess I will have to make due for the meantime.

 

I'm also having this problem, and not only does it not undo, but replaces textures i've worked on with other ones, which makes me lose hours of work. has there been any progress on this, or jessee03, have you found any workarounds?

 

Hey peeps. Sorry to resurrect this thread, but I'm getting this same error message when baking a Very Large Scene with Umbra. I'd also appreciate any updates on this issue.

 

Going bump this. Over a year old since the last answer and I'm getting this. With the 64bit client can we get more memory or an option to allow more memory to be used?

 

Still no work around for this, you'd think they would address this issue. Bloody annoying.

 

I know this is an old thread, but I was having this issue myself where I would get this warning, and if I tried painting the (large) terrain again Unity would crash. Googled for days before I figured out a solution, so I figured I'd share it in case someone else is having similar issues.

Open the Preferences and under GI Cache, click Clear Cache and increase the Maximum Cache size.

At least that worked for me!

 

not work for me

 

its can be easily fixed by clicking on your splatmap by Repeat to Clamp and back.

Also u can try in scene view change view from shaded to normal

 

Those do not work for me. I am using 2018.1.f6 , and I must set build setting to Iphone which can not use normal view mode.

 

I also have this issue in 2019.2.10

 

Its crazy that this issue still exists.

The ability to set the memory limit should be included at the absolute minimum. With 23GB free on my machine I should be able to dedicate a little more memory fat to the issue.

5 years later, is anyone looking into it yet???!!!

 

doesn't seem like it. Interesting.

 

I noticed this issue pops up if you crank the texture resolutions (on terrain data) too high. Somewhere around 2048 control texture resolution it appears.

 

Still happening in 2019.3.14f1, Terrain Tools 3.0.1.

 

I've got the same issue in 2019.3.0f3, using microsplat.

 

Seriously? I guess Unity doesn't care about painting terrain. I've got the same issue in 2019.4.13f1, also using Microsplat.

 

Same problem. Different year.

 

It's been 5 years and this bug is still showing up. Unreal Engine is looking pretty nice right now.

Edit: I've got 32gb of ram and my textures are all set to lowest settings and the bug still appears. Unity does not reach any physical limit on my machine. Not even close.

 

Same here, happens in unity 2019.4 LTS with terrain tools

 

Well, I think that we will celebrate ten years of this bug soon. If Unity can stand against Unreal 5, ofcourse, for the next three years

 

2020.1.14The same problem was encountered when drawing the sixth texture

 

Same here this is really frustrating

 

Just thought I'd chime in to say I'm seeing this as well. I don't really care about not having an undo, but the bigger problem is that after the operation, it doesn't mark the scene as dirty, so saving it does nothing. Now, you can just tweak anything else, save, then revert the change to get it to save.

 

Sorry, but its 2021 and this error still persists, at least give us a way to just stop the error from popping up, its really annoying !

 

My terrain kept saying this when I painted textures on it, I fixed it by changing my Control Texture Resolution down by one (It was on 2048x2048, I changed it to 1024x1024) This fixed the issue for me, hope it works for everyone else!

 

Yes bro we do realize that this method works, tho i'm working on a project where performance doesn't matter and require the highest quality possible, even when painting very small places , so i increased it to the MAXIMUM, i don't need the undo, i need that error to get the H out and stop popping cause its really annoying

 

Problem is fixed :

 

irrelevant.

still happen in latest 2022.2 alpha.

 

wow, 8 years now since the original post and no fix yet LMAO !

 

Same with Unity 2020.3.24f1 LTS. Is there realy no fix for this? Added 8 Layers and started painting a (large) terrain, quickly became this error which blocks any new paint. Clearing GI Cache and increasing did not solved the issue.

 

There's a ton of weird terrain bugs that still haven't been fixed

 

Ha ha ha) It's 2023 (01/21/2023) now! I'm running Unity 2021.3.14f1! And I also have this problem))) Clearing the cache and increasing it does not help ... It's been 7 years 11 months and 17 days since the official message was written) I think you can no longer wait for a fix)

 

The entire terrain system and the terrain tools are causing soo many errors, even in a new project, theyre almost unusable. All of these bugs have been reported multiple times but they arent fixed

 

Agree! I constantly suffer, after each restart of the project, to draw new colliders in the Grid using the Tile Palette, and a bunch of other bugs to fix ... For example - how I got this error - I decided to delete 24,700 trees) I ended up adding them to the prefab and deleting them his... In short, he's still crap, considering that the prefab was created for a very long time, it's just kick-ass how long...

 

It's 2023 and this issue is still present... It's been more than eight years!! Just patch this problem already... It shouldn't be this hard for a company of this size...

 

Agree. The fact I cannot use Undo while painting my terrain textures is really annoyng. And it's already 8 years since Unity acknowledged this problem here...

 

Bumping once mare, I am having this issue using Microsplat with 16 textures. Unfortunate that it hasn't been fixed yet.

 

Try lowering the resolution of the control texture in the terrain settings tab. It's not good to have low resolution splats, but that's the only known solution for me.

 

I discovered the solution to the problem...

First, copy the Terrain you are having trouble with from the scene and paste it into a newly created scene called "Test". After copying, it will be synchronized with the one in your actual scene, and problems such as the rollback issue have been resolved for me.

Thank me later