Adding delay to finite pulse generation generates error -200305

Hello,

Sorry I am relatively new to pulse generation. Please help me understand why I am getting an error -200305 in my example VI Test Pulse Generation.vi when specifying an initial delay. Other than creating a task first and giving it a name, the code looks the same to me as the code in the LabVIEW example Gen Dig Pulse Train-Finite-Dig Start.vi that shipped with LabVIEW. When I am entering the same parameters into Gen Dig Pulse Train-Finite-Dig Start.vi, I do not get this error. What might be going on?

I am using a DAQ board NI-PCI-6031E on a 64-bit Win7Pro and am running LabVIEW 2011(64-bit).

Thank you for your help and forgive me for a maybe trivial question.

Peter