Which ACL permission triggers code:200 OK when using 'resource browser'

Hi all
My client gets a code:200 OK error when she opens the MODX resource browser, through the browse button in tinyMCE, to add a PDF to a link.
Th strange part is that she can click the error away and link the PDF anyway.. it has something todo with media-sources i think
Does anyone know which ACL permission could be responsible?
i traced it back to a call to

www.mydomain.com/conectors/index.php

action: "source/getlist"

Referer:"http://www.mydomain.com/manager/index.php?a=browser&ctx=web&wctx=web&source=2&id=33&referringAction=resource%2Fupdate&v=233pl"

anyone knows what permission to grant??
RDG
[ed. note: rdaneeel last edited this post 11 years, 3 months ago.]

Could be the class_map permission.

You can start with a duplicate of one of the existing Policies that works, then uncheck the permissions you don't want, checking every now and then to make sure it doesn't break.

Hi Susan,
the class_map permission is the first thing i tried. I was kinda hoping to avoid the trial and error proces.
anyone else know which permission this could be?
RDG

I see four permissions required in that file (core/model/modx/processors/source/getlist.class.php) source_edit, source_save, source_delete, and source_view.

Do you have the basic "list", "load" and "view" permissions checked?