Well, here there are a couple of suggestions for you.
With respect to filename, you may be passing too short a string to retrieve the user input in GetCtrlValCVI offers a useful macro to express the size of a string to hold a pathname, so ou can dimension the string as char address[MAX_PATHNAME_LEN]; , next passing it with its simple name (which in effect already is its address): GetCtrlVal (panelHandle, PANEL_fileA, address).
Another hint in this case is to check if the user has given a fullpath, included backslashes: these must be doubled since a single backslash is interpreted in C as an escape code.
But maybe the best suggestion is to let the user navigate to the correct destination and give the file name wusing FileSelectPopup, which returns the complete pathname that you can use without further modifications and formatting.
With respect to Delay, it actually stops program execution until the given time period elapses, so you must develop your pausing strategy in a different way. In effect, a 1 hour stop is more like a "activity suspension" than a simple pause, and you should handle it differently, especially if you want to maintain some user interaction during this time. You could for example let the system run disabling the forbidden buttons or hiding them, or divide the interval in littler time slices using ProcessSystemEvents to eprmit handling other events: there are several threads in the forum that discussthis item, so you could made search on it.
But the first suggestion I can give you is to run the tutorials if you haven't done it already, to study some basic documentation that comes with CVI and carefully study some of the examples installed along with the environment, that can give you a better understanding of the instrument you are using and answer some basic questions you still have.
