Okay, don't worry about properties, mine says version 1,0,0,0 too and I know I have the patch. When you launch the game and get to the main menu, there should be a version 1.1 indicated in the upper left(?) corner of the screen. I think you may be okay with the file you downloaded.

One thing to consider based on what you are saying: don't do any single player activities prior to going to MP. SP and MP have different stats and if it loads the SP stats first you will go online with SP stats. I don't recall what exactly happens when you have a mix SP and MP stats in the same game. If you play a SP game (don't know if historical and/or custom battle are included in this), exit the game and restart it before going online.

When you say crash do you mean to the desktop (game over) or the PC locks up?

Have you tried joining rather than hosting?

Do you have a firewall? They can interfer with hosting.

Did you have any problems with the game online pre-patch?

BTW, a search of the Apothecary might yield an anwer to your question.