Reading and Recording Two Signals

Hi,

I am looking to read in two signals, both are triggered voltage pulses, and plot them on the same waveform chart and print them into the same excel file.  I get an error saying, "The specified resource is reserved," when I try to run the code. Also, I have not been able to wire the error out to the "Write to File" error in, but I'm not sure if that's necessary.  The code is attached.

Thanks!