So if you use the wizard while installing and define a sonicwall appliance and shared key, when it goes to start you will get a failed to start Dell sonicwall sso agent service. error during initialization conversion from string to integer is not valid.
If you then go into the diagnostic logging, turn it on to a level 3, and start it up… it works! ok, thats weird. Now flip it back to a 1 and it continues to work…. what is going on here
Michael Ellerbeck 
Very strange indeed – I was having issues as well with little to no info online to help… until I found this post! Thanks.
Agreed! Worked for me *Bump
Wow what an annoying bug. Thanks for this.