No field in current record - message

Question

Access2007.accd of an old db built circa 90s .mdb; 
Main form, with single form Sub form2, with continuous Sub form3
Main form has a Combobox1 to select record from Table 1
Sub form2 has a Combobox2 in its header to select record from Table 2 (Many to Table 1 key)
Combobox2's record set is a query with criteria of Main form Key ID so it only displays choices valid to Main form 
continuous Sub form3 displays records from Table 3 (Many to Table 2 key)
and this all works fine
when Main form's combobox1 is changed, subform 2 is requeried and combobox 2 requires an explicit requery in the combobox 1 AfterUpdate Event
this also works fine - except - if one has highlighted a row in continuous sub form 3, and then using your cursor to go to Main form combobox 1 and select ; then the error message 'No combobox2 is in the current record' appears
so I am guessing the 'current record' is the issue but not sure how to resolve.......

Answer 1

All that I can add to this is:
clicking in a row/field in continuous sub form 3 causes the problem as per the first post
if one clicks into single Sub Form 2 before triggering the Main combo box - everything works ok
because the error is saying 'there is no such field in the current record'....and the Go To step of the macro is to a control and not a field - it is a baffling error to me.  But to satisfy this insanity I created a calculated field in the query record
source of continuous sub form 3 using the name of the control and just entering a fixed 'dummy' value....
and that works.... a bizarre work around.......