Ok, this is all I can come up with. Try the following, sorry for all the trouble.
Uninstall
Control Panel > Add/Remove Programs
Remove
Windows Live Messenger
Remove
Messenger Plus! Live
Registry
Start > Run > type regedit
Delete
HKEY_CURRENT_USER\Software\Microsoft\MSNMessenger [
image]
Delete
HKEY_CURRENT_USER\Software\Patchou [
image]
Folders
Delete
C:\Program Files\MSN Messenger\
Delete
C:\Program Files\Messenger Plus! Live\
Delete
C:\Documents and Settings\[USER]\Application Data\Microsoft\MSN Messenger
Temporary Internet Files
Internet Explorer
[Tools > Internet Options > Delete Files]
Mozilla Firefox
[Tools > Options > Privacy > Cache > Clear Cache Now]
Download and Install
Windows Live Messenger 8.0.0792.00
Messenger Plus! Live 4.00.235