New Post: what is the best way to deploy task scheduler with my .exe ?

I want to register a task in client system at the time of installation ...
I combined it with installer class .. but when running installer its give exception UserId: , Task:
I already run it as Admin
It is giving exception on line when register task.. i.e

ts.RootFolder.RegisterTaskDefinition("Test", td);

Please Help Me!
Thank you