Created a blank page, added the recordset but didn't add ANY of the include references you've listed. Tried to edit the recordset via the Server Behaviours panel and no errors were presented so...
Added the eCart Object to the page....straight away it is listed with a red exclamation mark and, lo and behold, we can no longer edit the recordset on the page:
I am confident, as a result, that this issue is directly linked to the eCart extension.
I'd appreciate you helping us to solve this as it has seriously delayed our project already.
PS. Just updgraded eCart and Free Tools to the latest versions and the error/conflict with the DMXzone Pure ASP Upload extension remains.
Can you please advise?