Access 2007 - Left Join to a query returns #Error instead of Null

Question

Similar to this question, but their problem with the query was never fully solved:

#Error showing up in multiple LEFT JOIN statement Access query when value should b

Answer 1

It's looking like it could be to do with a known bug in Access, whereby it makes mistakes on outer joins with calculated fields:

http://allenbrowne.com/BugOuterJoinExpression.html

and

http://allenbrowne.com/bug-10.html

So going to see if I can rejig the subqueries to disguise the calculated fields somehow.

I love Access. :)