Crystal Reports stopped saving.

Hi,

I've been opening, working on and saving crystal reports (to and from BO 4.0 Enterprise) all day yesterday and part of today without any problems. Suddenly I get and error message when trying to save saying "Invalid Pointer".

Strangely I now also get an error message when I open up my BI Launchpad. This says:

com.crystaldecisions.sdk.occa.report.lib.ByteArray cannot be cast to com.crystaldecisions.sdk.occa.report.lib.PropertyBag (LO 26000)

Does anyone have any ideas what is wrong and how do I fix it.

Many thanks

Stuart.