Hello,
I've been playing D2 for a while now with the original cd and cd key....today in the mail I received my copy of the expansion brand new nothing wrong with it when I get to 66% of the installation it gives me this message

[IMG]http://i38.photobucket.com/albums/e126/k9x2/loderror.jpg[/IMG]

When I put in the LOD cd I cannot click the ok button Thanks for any help

Hello Kaos9x

If it is a new copy than it might be using the new installer which will not agree with the older installer.

check the CD-Key for the expansion, if it is 26 characters than it is the newer version and you may need to register the game on Battle.net and download and install Diablo II form there suing the new 26 character key provided when it is registered.