The error messages were about the DB. I corrected the setting in the php file, and everything worked fine in terms of uploading files. After that, however, resources could not find given files previously uploaded (1.1). That is when I went to my host and deleted those folders in the DB. I re-created folders, then things worked fine. As you can tell, I'm fiddling a lot with this rather blindly, which makes me nervous. But all seems to work now.