Ok, so every time a new client comes out you have to download the old one to run bots.
There is a very simple solution to this:
First select your sro_client.exe and silkroad.exe BEFORE you run the patch
Then, add them into a zip file
Run the patch
Replace the two files after the patch is completed
Yay you can bot again... lol
An alternative solution if you have Norton Protected Recycle Bin: After the patch if your bot does not run just go to NPRB and search for the two above mentioned files, and recover them. Then you will be able to bot properly.