We are using the DreamSlider module on several sub-portals of a DNN instance (subportals like www.domain.com/subportal/). When we upload images as host user, everything works as expected. But when the administrator of a portal wants to upload images, he is logged of.

After a certain amount of time spent researching what the problem could be, I found out that the Uploadify control does a post to /DesktopModules/DreamSlider/Handlers/Upload.ashx. DNN then logs out the user and sends back a 302 redirect to the same address. Because the user is not logged in anymore, he will be redirected to the login page.

To solve the problem, the script address for the Uploadify control should contain a parameter PortalId that contains the ID of the current portal:

    /DesktopModules/DreamSlider/Handlers/Upload.ashx?PortalId=3

As the administrators of the portals can't add images, it'd be nice if you could fix this issue as soon as possible (or provide the source code if possible; I could look into it and send the modified file back to you).

Thank you
Raphael