functionality of form decreasing

[Papa Jonah]

I have a form with two subforms that I have used for data entry as well as
reviewing the records. Overtime, I am noticing that some fo the
functionality is diminishing and I can not figure out why.
For example, one subform has a few comboboxes which have been working fine.
Today I noticed that although I can click on the comboboxes, the options
appear, I can scroll through the lists, but I get a ding when I try to change
a selection. I can neither make a new selection or change an existing one.
This is true of each combobox in the subform.
Similarly, I can not check the checkboxes or enter dates in the date fields
of the subform. (there are no other fields on the subform - that is to say
every field on the subform is dinging me).
I have tried dorking with relationships, queries, etc and I can not figure
out what I must have changed to stop it from working.
Any ideas would be much appreciated.
TIA
Papa

 

[Golfinray]

Very possible that with a ding either the table or query that the subforms or
mainform works off of is uneditable. Check your tables and queries to see if
they are editable (the arrow and asterisk at the bottom.) If they are not
editable, your form won't be either.

 

[Papa Jonah]

I am looking at an older version of the database that worked, and a more
recent one that is not working as well. All the tables have a bright
asterisk next to the arrow.
So, either I am looking at the wrong thing, or I don't have that problem.
Although I can not edit the forms, I can edit the content of the tables -
which is then evident in the forms.