windows task scheduler - %1 is not a valid application

hi all,

i developed a windows application with only one for. on that form load event i written some program, thats all (no other events, no other forms)

then i build and install in my local laptop, 

then from Windows Task Scheduler, i created task and pointed my application exe(where it is installed) but, WTS always throwing exception as "%1 is not  a valid application"

           There is not space in the installed folder path

            i Dispabled my Anitivirus

Eventhough im getting above problem, can you please tell me how to resolve this problem.

Thanks In Advance, Jeyaseelan