1st problem: Make sure that the file is not not read-only. It
must open normally.
For example, you are opening homework.doc. The title should read
homework.doc, not homework.doc (read-only). If it's opened as
read-only, you can't copy and paste anything.
2nd problem: This is pretty common with Windows Explorer. All
applications are running normally, except that you don't see them
in the system tray. If you need them, just restart your
computer.