I see several posts from people that makes me suspect the patches are not properly installed on PCs running with Vista.
I believe the cause is that these guys are not logged as Administrator, so the patch installer probably is not able to overwrite the WW1.exe file.

If you want to check quickly if the patch has been successfully installed, you can do so:
- Go to the game folder and
- right click on the WW1.exe file icon, a popup menu will appear
- select the Properties option, a window will appear
- select the Version tab and check the 'File Version', that should be as follows: 1.0.4.1 for 1.04a, 1.0.4.2 for 1.04b, or 1.0.4.3 for 1.04c
I'm going to configure the patch installer in order to force the overwrite of the files, whatever is the current user logged in! Investigations ongoing...

Thanks,
Calvinus.