Initialises the grid without a ClassDef. This is typically used where the columns are set up manually for purposes such as adding a column with images to indicate the state of the object or adding a column with buttons/links. The grid must already have at least one column added. At least one column must be a column with the name "HABANERO_OBJECTID", which is used to synchronise the grid with the business objects.
Thrown in the case where the columns
/// have not already been defined for the grid Thrown in the case where the grid has already been initialised