Try exporting to .idml. If that works, openthe .idml and save as a new .indd.
If it doesn't work, force quit ID and then restart. Auto-recovery should kick in and reopen the file at about the last state, then try again.
Try exporting to .idml. If that works, openthe .idml and save as a new .indd.
If it doesn't work, force quit ID and then restart. Auto-recovery should kick in and reopen the file at about the last state, then try again.