I was getting this as well after upgrading, so I installed the new build..
Now my SQL Compare is crashing upon startup, like I was experiencing at one time, using version 9.
Looking at the email from that time, then it was a AV/Firewall issue, but I cannot see anything in the log this time around.
Debugging the application, I get this exception:
An attempt was made to access a socket in a way forbidden by its access permissions
at System.Net.Sockets.Socket.DoBind(EndPoint endPointSnapshot, SocketAddress socketAddress)
at System.Net.Sockets.Socket.Bind(EndPoint localEP)
at #Ahw.#Fhw.#PdC(Int32 nMilliSecondsToWait)
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
My previous problem was logged with the number F0050810.
-- Regards, Morten