On the Mac SignUp Client:
1. Open up /Library/Preferences/com.pharos.signup.plist in a text editor
2. Add the line "Client Logging Enabled", changing the value from 0 to 1
3. Reboot the machine.
Alternatively you can also do the following:
1. Open up a Terminal in /Applications/Utilities and run:
defaults write /Library/Preferences/com.pharos.signup.plist "Client Logging Enabled" 1
Logs will appear in /Library/Logs/com.pharos.signup.daemon.log and should be sent to Pharos Technical Support with the problem detail.