I'm facing the next error in HP ALM 11.
1. Go to Customization of the project.
2. Select Project Planning and Tracking point of menu from the left side.
3. Then in Filter By select "Requirements" --> 3 items are displayed (Covered Requirements, Passed Requirements, Reviewed Requirements).When you click on any of them the next QC error is displayed: "Error: the specified type <3> doesn't exist".

Are there any ideas why it can happen?
Has someone face such or similar issue?