Failed to create the part's controls in Eclipse with Salesforce

Question

I have Eclipse Juno and Force.com IDE. When I try to create new classes they always show: failed to create the part's controls. It worked for the first time, but now they always show this. Same happens if I create them inside the force.com platform.

Error details:

org.eclipse.core.runtime.AssertionFailedException: assertion failed:

at org.eclipse.core.runtime.Assert.isTrue(Assert.java:110)

etc ...

I would appreciate all help.

Answer 1

You can fix this error by switching the eclipse workspace. 

Go to menu-> Switch workspace->Other->Select the same workspace you were working with

The eclipse will then restart and then you should not get an error.

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