Why are my trace and item channels not saved?

jagoorv4 · May 24, 2014, 11:54am

I’m not sure if this is a bug or I am doing something wrong (i.e. there is some special button I must click to save project settings, however UE4 saves my action and axis mappings just fine). I have created a new trace channel and a new item channel so I can detect when the player is looking at items they can pick up. It works fine but every time I save and exit UE4 and then load the level again, my trace and item channels are gone and I have to create them again.

anonymous_user_b9532c9a · May 24, 2014, 4:01pm

Hi jagoorv4,

Are you making sure to compile and save the blueprint you were working in as well before saving the map? If you just compile it will not save your changes.

jagoorv4 · May 24, 2014, 11:02pm

Thanks for the response.

After finding it wasn’t saving, I went through and made sure everything was compiled and saved and that the level was saved but it doesn’t seem to make any difference. I will go through again next week when my computer is fixed (faulty PSU) and double check I didn’t miss anything.

jagoorv4 · May 30, 2014, 1:36pm

Ok, computer’s back up and running.

I created the trace channel and collision preset (that’s what I meant instead of item channel), made sure all blueprints were compiled and saved, hit file > save on the editor, and it forgets them next time I launch the editor and open the project back up.

anonymous_user_b9532c9a · May 30, 2014, 1:39pm

Have you been able to reproduce this in a clean project with no additional code? Additionally, can you show me a screenshot of how you have it set up so I can try to reproduce this on my end? Thank you!

jagoorv4 · May 30, 2014, 3:19pm

I just found a workaround by hitting “set as default” after setting them up.

I successfully reproduced it on the blank project template without starter content - screenshots coming up…

(it won’t let me post the comment with the pictures for some reason so I’ll just describe it I guess)

Create a new blank project without starter content
Go to edit > project settings
Click on collision tab
Create new trace channel, name: Items, default response: ignore
Create new preset, name: Item, collision enabled, worldDynamic. Set to block the “items” trace channel
Close project settings
File > Save

Upon reopening, the trace channel and preset are gone for me.

anonymous_user_f28231101 · June 14, 2014, 3:52pm

I have the same problem. Is there a solution yet?

anonymous_user_b2ff189e · June 15, 2014, 7:55pm

Also having this problem with the trace channels. For now I have to keep importing the config files every time I reload the project.

anonymous_user_f28231101 · June 16, 2014, 8:29pm

Hi glacierbolt,

do your Blueprints using the channels work after importing the config files? I have to go through all my Blueprints and reset the channel in every trace node which is extremely annoying.

EDIT:
I think I found a workarround. I appended the content of the file generated by the export function in the project settings to the project/config/DefaultEngine.ini file. That causes the the custom channel to be loaded correctly.
I am not sure whether this is a good idea or may cause problems but so far I am happy with it.

anonymous_user_b9532c9a · June 17, 2014, 2:15pm

Hi everyone,

I was able to reproduce this and am attaching this conversation as well as my own findings to a bug report for assessment. Thank you and have a great day!

Monokkel · June 18, 2014, 4:59pm

Just commenting to add that I’m having the same problem. The option to set as default is greyed out for me, so I can’t use your workaround either.

virusescu_1 · June 28, 2014, 10:39pm

When is the bug going to be fixed? Also is there a page to monitor the progress of this bug? Also what is the workaround?

anonymous_user_b9532c9a · July 1, 2014, 5:26pm

Hi ,

This bug has been fixed in our internal build, but I unfortunately do not know if this will be added into 4.3 or a later build. jagoorv4 did post his workaround earlier in this thread, please check there for an alternative solution. Thank you!

Denny · July 12, 2014, 6:21pm

Thank you for this workaround. It helped me as I can’t use the Set Default button in 4.2.1.

TychoVII · September 18, 2014, 8:55pm

If your “Set as Default” button is grayed out like mine was, my workaround was to hit the export button and export the custom settings to an INI file, then open it up and find the line that contained my custom trace channel, then copy it into my project’s DefaultEngine.ini file. I have a custom trace channel for a groundplane and it ended up looking like this:

Rhynedahll · November 18, 2016, 2:19pm

I know that this is an old thread, but I have just encountered this exact problem in 4.13.2.
We have a child character class that is derived from our parent character class. We can change the Collision settings for the character mesh to custom, compile, save, submit to source control, then close and reopen the project and the Collision is reset to default.

This appears to be related to this issue: Editable Blueprint values keep resetting - Blueprint - Unreal Engine Forums

Our current workaround is to change the default CharacterMesh collision preset to our desired values. (Edit>Project Settings>Engine>Collision>Preset>CharacterMesh & then Edit)