To confirm: So wyUpdate does not update itself on the clients computers, ...
wyUpdate does update itself on your customers' computers.
I must include wyupdate.exe in the patch I make in wyBuild?
No, don't include wyUpdate within your wyBuild project. Only include wyUpdate.exe with your initial installers.
PS: have you set the Capcha setting to "impossibly hard"
We use a third part "captcha" service called ReCaptcha. Unfortunately it's often hard for even English speaking people to decipher.
If you make a user account on this forum you don't have to fill out the captcha everytime you post.
We plan on replacing this whole crappy forum software (including indecipherable captcha) with something we made in-house once we get it up to snuff.