The latest version of AOE II - The Conquerors Expansion is v1.0c. You can download the upgrade patch
here. This update breaks compatibility with previous
saved games and recorded matches. If you need to use recorded and saved games from previous
versions, please download this file and use it to
launch the game instead of the regular "age2_x1.exe". The previous version should only be
used in the case that you need to view a recorded or saved game from that game version.
This upgrade applies to all released versions of The Conquerors.
Here is a fixed executable for 1.0c, with the CD check removed.
Again, first download and install the upgrade patch, then overwrite the game executable with this one.