On a XPages I can load my Activity Stream with the ActivityStreamDatasource. I use a repeatcontrol to display all the entries. My repeatcontrol has a var="dataSet".
So far so good.
When I remove an entry in the Activity Stream in the SBT and I refresh the part of the page, so the data is recollected. My entry is still in the stream. So I think it is a cache issue.
In the ActivityStreamDatasource I found a parameter 'clearOnRendering', so I switched it to true, so I thought my stream will be refreshed.
But now I get an error,

How can I refresh my ActivityStream data, without error?