Ran into an issue recently when installing the MSSQL agent on a Windows Server 2008 64bit and SQL 2008. Agent installs without issue. Problem is when you try to enable the tool from the LEM console.
When configuring the tool from the LEM Console, be sure that you change the the default location for the log files from C:\Program Files\Solar Winds....... to C:\Program Files (x86)\Solar Winds.....