New Post: 1.4 to 1.5 upgrade failure...

I just attempted an upgrade with a package freshly downloaded and it still fails.

I managed to get it working by manually executing 1.5.528.0.SqlDataProvider.sql on a v1.4 database restored.
The install/install.aspx then still reports to have (further?) upgraded the DB (while I was expecting it to reply to me the DB was already upgraded).
But now it seems to work.

Ideas?