Clicks on view graphs in deadlock session gets an error "sql server management studio cant be launched"
Third party issue.
This is a SSMS bug and not Spotlight's. The SSMS deadlock viewer doesn't handle some forms of the deadlock XML properly. Note, we don't manipulate the XML in any way; just collect it from SQL Server and then send it to SSMS.
Microsoft is aware of it. Here is a link to their site.