Thank you for the file. Sadly the issue still persists. The query must be incorrect as it’s not returning any results.
Just to confirm, “category_name=lachlan-catchment,rivers-creeks” by itself correctly lists normal post types with category “lachlan-catchment” and “rivers-creeks”.
In addition, query “post_type=events&meta_key=end_date&meta_value=20130618&meta_compare=<” by itself also correctly lists posts of type “events” where field “end_date” has a value less than (<) 20130618.
How would you combine the two queries to get a complete list containing posts from the first query together with “events” posts from the second query?