A couple of things:
First of all, ReturnHeadersNoCache is deprecated -- how would I do the same thing with ad_conn -set The documentation isn't very clear on this.
I'm not entirely sure how to use it to add the content-disposition header either.
It seems like this is something that should be done in the
list::write_output
function by list-builder, no? Currently, I just get a browser window full of csv text, instead of a download.