The most common reason for error 270 when scanning is a DNS resolution error.
Ensure that you are meeting all scanning prerequisites, and that you are able to resolve the target system properly by forward and reverse nslookup.
If there are any differences between the forward and reverse lookups, then this is where you will want to start.
If everything is good on the forward and reverse lookups, please submit a web ticket to us. Please include the console logs from C:\Programdata\LANDESK\Shavlik Protect\Logs for us to investigate the scanning issues.