How about using Media Browser to import the files? I'm not sure why the png file import is missing, but I really like using Media Browser for loading multiple files without opening a new window.
I just drag files into the project pane to import.
For me that does not work.
And because of that, when i load a project with a lot of png files, i do not have any other choice to load them as quicktime files as we can't do it with the media browser.
I think it's a mistake or i forgot something...
This is happening to me also. It must be a mistake on Adobe's part, but I can't imagine how something like this would happen.
Why don't you just wait for the second bug fix to come out?
The FIRST bug fix typically fixes common bugs -- and who knows, yours may be among them -- but breaks things that once worked just fine.
The SECOND bug fix generally fixes the bugs created by the first bug fix.
In addition you can probably look forward to a third bug fix, which addresses more exotic & rare bugs.
What to do in the meantime? Use an earlier version.