Calling C FMI method fmi3DoStep() results in System.AccessViolationException

[damian-leporis-se]

I am trying to run the provided BouncingBallGif project in the .NET solution.

At Library3.cs:

 public override void Step(IntPtr handle, double currentTime, double step)
 {
   fmi3DoStep(
     handle,
     currentTime,
     step,
     FMI3.fmi3Boolean.fmi3True,
     IntPtr.Zero, 
     IntPtr.Zero, 
     IntPtr.Zero
   );
 }

I am getting error:
System.AccessViolationException: 'Attempted to read or write protected memory. This is often an indication that other memory is corrupt.'

I had a suspicion if the dll is the correct one for my 64bit PC, I checked what private string GetLibPath(IModelVersion version, string coSimulationId) results in, and it does match:
C:\Users\MYUSERNAME\AppData\Local\Temp\Femyou\BouncingBall.fmu\binaries\x86_64-windows\BouncingBall.dll

[damian-leporis-se]

This problem occurs with Reference-FMUs-0.0.34\3.0\BouncingBall.fmu in https://github.com/modelica/Reference-FMUs/releases/download/v0.0.34/Reference-FMUs-0.0.34.zip not with Reference-FMUs-0.0.34\2.0\BouncingBall.fmu