Good morning Grant,
my MT4 Logs do not show any errors ( not in Expert / not in Journal ), the trade entrys are booked correctly.
The error only shows up on the Zorro side. I can stop it by using greater WAIT - times.
brokercomands with SET_WAIT below 200ms shows the Zorro errors, times above 200ms makes Zorro and MT4 work correctly.
Regards
Hendrik