Does write to measurement file need a blank file?

[sharmishtha]

Do we need to supply a blank file to write to measurement file? I am supplying a file with some text headers in it to my Write to measurement file, and for some reason it generates Error 100, saying that it is "not a path". I am not sure, if I need to supply a blank file or not. Also, is it possible to get rid of the headers that write to measurement VI itself generates in the file, and supply my own headers instead?

Thanks.

[smercurio_fc]

Please stick to your original post, where you are already being helped on this issue.