Cell data changes made in i2b2 Admin are not saved

Changes made to cell data from within the i2b2 Admin are not getting saved to the database. An "ERROR" is returned in the xml message from the PM Cell.

STEPS TO REPRODUCE:

1. Log into the i2b2 Admin Module.
2. In the Navigation tree on the left, expand Manage Cells to display a list of cells.
3. Click on the name of one of the cells in the list.
4. Make a change to any of the existing data.
5. Click on SAVE to save the edits to the database.
6. In the navigation tree, click on the name of the cell to refresh the data on the page.
7. Notice the changes were not saved.