Illegal states occur when the server receives implausible messages from the client - it's not automatically cheating, but can also occur due to bugs. You can increase the limit without any problems, it's not less safe (since the implausible actions still won't be processed) 
This was Red51 response.
Would like to know where this setting is located and what the setting is called. Thank you
A few of us on the new server are getting that message
