The Eclipse CSS editor encountered an "unknown property" error due to confusion caused by the LESS nature

After exhausting my search on Google, I have resorted to seeking help from you all...

I am working on a static web project in Eclipse Kepler (not JavaFX, so no JavaFX toolkits!) and here is the messy path I have taken:

  • Created a .less file for the first time
  • Eclipse kept prompting me with the "Do you want to add the LESS-project nature?" pop-up
  • Clicked 'no' 10 times (it pops up every time I start Eclipse)
  • Eventually clicked 'yes' to add the nature in order to stop the prompts (could not find any workaround for that frustrating situation!)

Now I am facing this issue: https://i.sstatic.net/aJJml.png

The built-in CSS editor labels every simple property as unknown. I am unsure how to resolve this. Even after removing the less-nature and restoring the old .project file, the warnings (and sometimes actual errors) persist. It seems rewriting the properties does not trigger these warnings!

No way am I rewriting around 6000 lines of css...

Please lend a hand. Please make it stop...

Answer №1

Apologies for the simple solution, but here it is:

  • Delete the project (just the project) in Eclipse
  • Re-import the project to completely validate its structure
  • Errors should disappear...

While this fixed my issue, I can't shake off the feeling of unease knowing that there isn't a straightforward way to do a complete re-validation without deleting and re-importing the entire project. It's quite inconvenient...

Answer №2

To remove the LESS nature from your project, simply right click on the project and select Configure->Remove LESS nature.

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