Checkboxes gone from FM 11 to FM 12
After converting a database from a perfectly working fmp7 file working under the latest version of FM 11, I tried using it in FM 12 and all the checkboxes are unresponsive. Even after I go into the inspector and verify every setting, they do not work. Not only I cannot interact with them, but all the values that were there are invisible, meaning there is no check anywhere, even where there used to be.
Examine the data in the field by placing a copy on your layout with the check box formatting removed to see if there is data in the field.
Try creating a new value list for the field and use it to convert the new "edit box" copy into a check box group. Does it work?
Try running a recover on the file? Does it have issues?