Question: I need to select the children nodes of elements where at least one child element does not have a specific property.

e.g. given this html

```
<div class="x" id="p1">
  <div class="a" id="c1"></div>
  <div class="a" id="c2"></div>
  <div class="b" id="c3"></div>
</div>
<div class="x" id="p2">
  <div class="a" id="c4"></div>
  <div class="a" id="c5"></div>
  <div class="c" id="c6"></div>
</div>

```

I would like to select all the children of #div2 (i.e. #c4, #c5, #c6) because #div2 does not contain a child with class b applied to it.

or alternatively the reverse selection would suite my needs.
i.e. to select all the children of any element where at least one child does have class b applied to it (#c1, #c2, #c3 in the above example)

For this latter example I tried using `.b~*` but this only selects nodes after the one with class b applied, not those before.

I'm not sure if this is possible in CSS.
If it is 100% not possible then that is an acceptable answer, I'll have to do it in JQuery instead (though I would prefer to avoid it if possible)

Answer: 
After using Process Monitor to profile the differences between accessing the external code in MSTest vs ASP.NET MVC, I found that ASP.NET MVC was unable to find many of the files that the external code relied on. When looking for the files, all folders included in my `PATH` were checked, but not the one I provided in the `ini` file sent to the external software. When running through MSTest, all files were immediately found without an issue.

In the end, I was able to 'fix' the issue by adding the folder path to my `PATH` variable. I'm not entirely happy with the fix, but it works now.
On **windows** the **default** calling convention is **StdCall**.

Try to use: CallingConvention = `CallingConvention.StdCall`