enums as template parameter for template class

There appears to be a problem with using a strongly typed enum as a template parameter for a class template. For example, trying to create a TTree Branch of type MyNamespace::MyClass (see attached header for definition) from the prompt fails as illustrated below:

root [0] MyNamespace::MyClass<MyNamespace::MyEnum::ZERO>* e = new MyNamespace::MyClass<MyNamespace::MyEnum::ZERO>();
root [1] TMemFile file("init.root","RECREATE");
root [2] TTree tree("init","init tree");
root [3] tree.Branch("MyNamespace::MyClass<MyNamespace::MyEnum::ZERO>", "MyNamespace::MyClass<MyNamespace::MyEnum::ZERO>", &e)
input_line_346:3:27: error: value of type 'int' is not implicitly convertible to 'MyNamespace::MyEnum'
((MyNamespace::MyClass<0>)obj)->ShowMembers((TMemberInspector*)args[0]);
^
Error in <TClingCallFunc::make_wrapper>: Wrapper compile failed!
Error in <TClingCallFunc::Exec(address, interpVal)>: Called with no wrapper, not implemented!
(class TBranch *) 0x10cc5230