Eclipse editor won't open

Question

My Eclipse cannot show the editor window.

Error:

Could not open the editor: The editor class could not be instantiated. This

Answer 1

A solution which worked for me (after first unsuccessfully trying the other more accurate steps listed above) was to do as below:

1. Close Eclipse and delete all the contents of {Workspace}.metadata.plugins folder.
2. Open Eclipse. It does not show any projects.
3. Import the projects into the workspace by going to the File menu, clicking import and continuing with steps.

The issue gets resolved this way. However, a drawback is that you have to import the projects again after the steps.