Not able to run Eclipse Application. Can't even start Eclipse IDE

Question

I have an RCP product which doesn\'t run. Then I installed Eclipse freshly, and when I open Eclipse.exe it doesn\'t open Eclipse IDE. I get the error: NoClassDefFoundError:

Answer 1

If Eclipse is not running for example when you double click on the eclipse.exe, then Eclipse appears for few seconds and disappears:

1. Go to Environment Variables
2. Clear the Java Options and IBM.
3. Try to open the Eclipse.