Joining universe based on Excel and BEx query in WebI

Hi Experts

I am trying to create a WebI report based on a BEx report (actual values) and an Excel
based universe (budget values). The common dimension that I want to join the
two data sources with is the date. From BEx I get the standard date format and
from the universe I get a date with the DateTime format (not able to choose
just Date in IDT somehow). Separately both of the “sources” work fine. But
after I join the two date dimensions in WebI and try to use any of the date
dimensions in the report, I get an error message (see below). After this I get an
error message and the WebI report I destroyed. It is not possible to open it
again. We use BO BI 4.0 sp 2 patch 14.

Has anyone encountered a similar error before?

1. com.businessobjects.sdk.core.exception.common.IllegalArgumentException:
   [IllegalArgumentException] <pageIndex> (Error: RWI 00011)

                  at
com.businessobjects.sdk.core.exception.ExceptionBuilder.make(ExceptionBuilder.java:144)

                  at
com.businessobjects.sdk.core.exception.ExceptionBuilder.make(ExceptionBuilder.java:84)

                  at
com.businessobjects.rebean.wi.impl.services.NavigationServiceImpl.navigateToReportPage(NavigationServiceImpl.java:85)

                  at
com.businessobjects.rebean.wi.app.ViewingFacade.navigateToReportPage(ViewingFacade.java:294)

                  at
com.sap.webi.ui.viewer.PageFactory.catchUpReportPageNavigation(PageFactory.java:602)

                at com.sap.webi.ui.viewer.PageFactory.getPages(PageFactory.java:668)

                  at
com.sap.webi.ui.viewer.PageFactory.getPages(PageFactory.java:198)

                  at
com.sap.webi.ui.tasks.NavigOnDocumentTask.doIt(NavigOnDocumentTask.java:62)

                  at
com.sap.webi.ui.tasks.NavigOnDocumentTask.doIt(NavigOnDocumentTask.java:23)

                  at
com.sap.webi.toolkit.ui.tasks.WebITask.doInBackground(WebITask.java:113)

                  at
javax.swing.SwingWorker$1.call(Unknown Source)

                  at
java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)

                  at
java.util.concurrent.FutureTask.run(Unknown Source)

                  at
javax.swing.SwingWorker.run(Unknown Source)

                  at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)

                  at
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)

                  at java.lang.Thread.run(Unknown
Source)

Kind regards

Erik