When I close labview I get a Visual C++ runtime library error, how do I resolve this issue?

Question

I am using Labview 2012 (64 bits) on a Windows 7 OS.
The error code is R6031 - Attempt to initalize the CRT more than once. This indicates a bug in your appilcation.

Answer 1

There are a couple of potential problems here:
- What is the definition of the Struct parameter? The boolean used in the struct may have a different representation than LabVIEW's boolean. Confusingly, on Windows, BOOLEAN is a byte, and BOOL is an int. (https://msdn.microsoft.com/en-us/library/windows/desktop/aa383751%28v=vs.85%29.aspx) In LabVIEW, a boolean is a byte. If the representations don't match, you'll have problems.
- The "arg4" array parameter contains only a single value. How large should that array be? You need to pre-allocate the array to the correct size (using Initialize Array), or at least set the minimum array size parameter in the Call Library Function Node configuration.
- Check the numeric representation of the "arg4" parameter. You build an array of a 32-bit int, but pass it as a 16-bit array. LabVIEW will coerce to the type specified in the Call Library setup (as indicated by the coercion dot), but it would be a good idea to get the data type right instead.