Not able to access to the designer

marosal633 · August 13, 2025, 7:40pm

I was making some changes on one project then once closed I wanted to reopen but it prompts this error. Is there a way to recover the project?

Pd. The projects still available for the clien sessions I only have the problem when I try to start a designer session for that project

java.lang.IllegalArgumentException: com.inductiveautomation.ignition.common.project.resource.ResourceNamingException: Cannot add child 'com.inductiveautomation.perspective/style-classes/fonts/text-medium' to parent 'com.inductiveautomation.perspective/style-classes/Fonts'at com.inductiveautomation.ignition.designer.project.ResourceTreeNode.addChild(ResourceTreeNode.java:252)at java.base/java.util.ArrayList.forEach(Unknown Source)at com.inductiveautomation.ignition.designer.project.ResourceTreeNode.(ResourceTreeNode.java:61)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.createNode(DesignerProjectTreeImpl.java:144)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.lambda$createNode$7(DesignerProjectTreeImpl.java:141)at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source)at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.createNode(DesignerProjectTreeImpl.java:142)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.lambda$createNode$7(DesignerProjectTreeImpl.java:141)at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source)at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.createNode(DesignerProjectTreeImpl.java:142)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.lambda$new$0(DesignerProjectTreeImpl.java:74)at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)at java.base/java.util.stream.ReferencePipeline$2$1.accept(Unknown Source)at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(Unknown Source)at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown Source)at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)at java.base/java.util.stream.ReferencePipeline.collect(Unknown Source)at com.inductiveautomation.ignition.designer.project.DesignerProjectTreeImpl.(DesignerProjectTreeImpl.java:75)at com.inductiveautomation.ignition.designer.IgnitionDesigner$StartupProjectDialogHandler.lambda$new$2(IgnitionDesigner.java:2072)at java.base/java.lang.Thread.run(Unknown Source)Caused by: com.inductiveautomation.ignition.common.project.resource.ResourceNamingException: Cannot add child 'com.inductiveautomation.perspective/style-classes/fonts/text-medium' to parent 'com.inductiveautomation.perspective/style-classes/Fonts'at com.inductiveautomation.ignition.designer.project.ResourceTreeNode.addChildInternal(ResourceTreeNode.java:266)at com.inductiveautomation.ignition.designer.project.ResourceTreeNode.addChild(ResourceTreeNode.java:250)... 35 more

Ignition v8.1.47 (b2025022612)Java: Azul Systems, Inc. 17.0.13

paul-griffith · August 13, 2025, 7:48pm

If you close the designer completely and reopen, you get this exception every time?

marosal633 · August 13, 2025, 7:50pm

Yes, same exception is thrown.
I also tried open a designer session from different Computer but still the exception. I haven’t tried restarting the Ignition container yet, I’d like to save that as my last resource.

paul-griffith · August 13, 2025, 7:53pm

The error message suggests something has gone very wrong with your project structure on disk. You may need to explore the container filesystem, specifically /usr/local/bin/ignition/projects/ and see why there is (apparently) one or more copies of your style classes injected as folders underneath your style classes.

marosal633 · August 13, 2025, 8:16pm

I’m looking at the filesystem of the ignition container but I’m kind of lost.
What exactly should I’ve look for? I’m already on the path of the style-classes for the project where I’m having issues.

paul-griffith · August 13, 2025, 8:25pm

Disclaimer: This is purely an educated guess based on the error message, no idea if this is what actually occurred.
What you should have is something like this:

But instead it looks like you've got something like this:

marosal633 · August 13, 2025, 9:18pm

This is what I found at path /usr/local/bin/ignition/data/projects/[PROJECT NAME]/com.inductiveautomation.perspective/style-classes

Not sure if the issue is in the directory names of “fonts“ and “Fonts“.
Also not sure if I only have to rm the file or directory that is causing the issues. Does this action could break all the other projects running on that Ignition container?

I also looked inside of the folders and for me, everything seems OK.

paul-griffith · August 13, 2025, 9:36pm

Try removing (or just renaming) one of the fonts folders - it's possible it's the case-insensitive collision that's causing issues.

marosal633 · August 13, 2025, 9:50pm

Tried renaming and also removing but still with the error

marosal633 · August 13, 2025, 9:57pm

Nevermind, It worked!!!
Was not only renaming those directories, I also renamed some other directorys and now the projects is accessible once againg from the designer. Thanks