Released a new patch for SKGL (now 2.0.5.3) which fixes the MachineCode error:

Release notes:

fixed bug https://skgl.codeplex.com/workitem/2166. Now, SKGL 2.0.5.3 although it will be find in the 2.0.5.2 solution. thanks to dprotopopov for bug report.

Summary: there was an issue with machine code calculation because of permission settings.

EDIT: fixed it for Virtual Box environment too.

Fix can be downloaded from: https://skgl.codeplex.com/releases/view/121143

NuGet users should have also received the update in the package manager.