@makazegamer Yes it is save. bot uses standarded windows security, doesn't leave foot print on system (no drivers) nor WOW (no injection). Follow the rules (rename executable name, that is the only thing wow can see under the restrictions, process module names) and you should be OK.
Of course always watch out news about MS security holes that enables hackers to jump from ring 3 to ring 1, and over taken computers....
@seenew that error might be related to your guest account not enabled or guest name incorrect.