I just installed Vista Ultimate 64. I have updated everything including
service pack 1, but media player still keeps giving me problems.

"Windows Media Player has stopped working

A problem has caused the program to stop working correctly.
Windows will close the program and notify you if a solution is available."

The problem seems to be the reason media center is giving me trouble when I
try to use it:

"Windows Media Center has lost its remote connection to media player and
needs to be restarted."

I have exhausted my troubleshooting skills (admittedly limited) and have not
been able to correct it. I have successfully installed other programs (Such
as Catalyst Media Center) to test out my system, and they seem to work fine.
Any help would be greatly appreciated!