Just a tip for those that are running multiple bots on the same machine and need a quick way to update all your copies of D3.
If you have Windows 7 you already have a utility called Robocopy. What this utility does is allows you to sync the files between two directories. It can actually do a whole lot more than that, but this is what is useful for this purpose.
Step 1) Update your primary copy of D3 and login to verify that its working and the patch is applied
Step 2) Open a command prompt
Step 3) Run "robocopy <directory of primary copy of D3> <directory of 2nd copy of D3 you want updated> /mir
What this will do is mirror all the contents from the first directory to the second. This means that any files that exist or have been changed in the first that are not in the second will be copied. Also note that any files that have been deleted in the first will also be removed from the second as well. So make the primary directory look like you want the rest. Repeat the steps above for each copy of your diablo 3.