Full Error:
Error:Unable to load grid data. Invalid filter criteria.
Details; Subquery returned more than 1 value.
This is not permitted when the subquery follows =,!=, <,<=,>,>= or when the subquery is used as an expression.
This seems to be an issue which is caused when using the Daxtra plugin as it creates Primary consultants. If a user gets the above error please raise a new online case with the support team and include full details of the error (with screen shot if possible).