Hi there Cronistar,
I have had this issue (unfriendly error) when attempting to upload an ISO via the Tenant Portal with an identical name to a Catalogue; is this the case for you also or is this just being thrown whenever you attempt an upload ?
Hi Cronistar and thank for the feedback. We are working on a fix for displaying proper error message.
In addition to the scenario which Adrian Begg described above, this error message might also be seen if did not select a catalog within the “Upload Media” modal or if you have no permissions for uploading media to the specified catalog.
That ended up being our issue- permissions. Even though the I had access to the catalog, I couldn't upload an ISO unless I had Org Admin permissions.