have a file xxx.ods and xx.odt where xxx.odt is a form with subform made from
the ods file and saved separately.

moved xxx.ods somewhere else.

opened xxx.odt. Displayed a blank form, no indication of any errors other than
no data displayed in form or subform.

switched to design view.

selected subform, opened properties, then got a dialog box about the data source
could not be found (referring to xxx.ods).

Upon clicking OK in this dialog, all of openoffice hangs and has to be killed.

Upon restart, it recovered, then offered to generate/send a error report when I
clicked next, but it never did; the recovery dialog just closed with no
subsequent send-error-report dialog.

This lockup does NOT occur if you try to access the properties of the main (or
parent) form. Only on the subform does it seem to hang.