Access denied exception in UWl IView

Hello,

we have a problem:

Users with no admin-rights get an access denied exception when trying to access our UWL-IView.

The Error text, displayed in the IView:

Access denied (Object:

portal_content/every_user/general/uwl/com.sap.netweaver.bc.uwl.uwlSapWebDynproLaunch)

...

We can't explain what happend, what has changed, because yesterday the IView worked fine for ALL users.

Do you have any ideas what happend and how to solve the problem, that all users can access the UWL-IView?

Thanks,

Steffen.