New BI Stats load failure ROUTINE_0001 for cube 0TCT_C21

We are trying to load Cube 0TCT_C21 with datasource 0TCT_DS21 and it's always failing on the 1st record of the 1st data packet with the following error:

Error in a formula function (routine ROUTINE_0001 ), record 1

Has anyone else had this problem with the new BI Stats?

Thanks.