Hi Peter,
To avoid consuming your time, I tried to seek an answer directly from DNN about when 4.6.1 will be available. No answer. If not by Monday, then I need to consider a rollback this weekend. (I checked my site before the upgrade, but obvously wasn't as thorough as I should have been. Although I did a download, I'll now be adding file uploads to my regression tests.) Did DNN happen to give you an estimate as to when 4.6.1 will be released?
Thanks.
Scott