.Net TypeLoadException

[knight74]

I was made a simple qt library from example

Also I was added lines to Worker class:
Q_CLASSINFO("ClassID", "{GUID1}")
Q_CLASSINFO("InterfaceID", "{GUID2}")
Q_CLASSINFO("RegisterObject", "yes")

But I got TypeLoadException on creating instance of netWorker.

I am use Windows 7 x64, .Net 4.
Building Qt config: version 5.4, win32-msvc2012, clr:oldSyntax.
.Net target x86

What I do wrong? Is there are an simple ready to use Qt project?