Microsoft Office Picture Manager Opens Slowly

I ran into a problem a few weeks back where I would try to
open an image attachment from an e-mail, and it would take
forever to actually open up. The splash screen for
Microsoft Office Picture Manager would appear, but then
seem to hang. After some time it would eventually open, but
something was definately wrong.

I searched all over the web for a fix, and finally found
the answer in Google Groups. My hunch about something to do
with an MRU (most recently used) list was correct. Picture
Manager maintains an MRU list in an XML file. If one of
those locations is no longer valid, or is on a slow link,
Picture Manager will appear to hang.

To fix this issue browse to %userprofile%\Local
Settings\Application Data\Microsoft\OIS. Locate the file
named OIScatalog.cag, and double-click on it. When asked
what you want to open the file with choose Notepad from the
list. When it opens you will see a file that looks like the
following. Remove any lines that start with mru path. Make
sure to remove the entire line including the
opening/closing tags. You can also just delete the
OIScatalog.cag file, and it will be re-created the next
time you open a picture.

Save the file, and then try opening another picture. It
should now open much more quickly and all of your headaches
will disappear.