Maintain Dimension error when processing in BPC 7.0M

I have a new installation (single server) of BPC 7.0M using SQL Server 2008.

When I process dimension I get the following errors:

when member sheet open - at the Start Creating Dimension - "There's no data in the mbr table to validate and process."

when member sheet closed - at the Making Dimension - "ActiveX component can't create objectObject variable or With block variable not set"

Can anyone help?

Many thanks