We've attempted pretty much anything possible with shutbug. v90 doesn't work, v120 doesn't work, v120 in windows xp compatibility mode doesn't work...
In the end installing Windows Server 2008 R2 (in 64 bits) and installing the Visual Studio 2015 C++ x86 redistributable instantly worked.
I've spent the entire day on this and I'm out of solutions for XP support. The only thing I can do is release a package that will allow compatibility with the new client hook version but it will be based on the one year old FLHook we used to run with. If you are not too fussed to never receive FLHook updates, this is a Windows XP compatible compromise. I will publish this package later today.