The relationship property of the DataMember property cannot be found in the DataSource

Question

I currently have a DataSet that has several tables for a C # Windows application. I have one parent table, and all the other tables in this set are child tables that are related to the parent column id column.

I recently added a new table and made the necessary relation to the parent table using the wizard and designer, and not for coding. However, when I go to my form and try to change the DataMember in the BindingSource properties screen, it does not find the relationship that I just created in the drop-down menu. I try to manually enter the name of the relationship, and I get the error message indicated in the header.

I never had this problem before I added the child tables to the DataSet and then changed the DataMembers for them, so I'm not quite sure where to go from here to solve this problem. Any help would be awesome.

Let me know if you need more information.

Edit: I should also add that this only seems to be happening with this DataSet. I tried to add the same table to another DataSet that I had, and everything worked without problems.