Can't import some classes

[LeeReid1]

I'm trying to use a framework in Python I built with c#. Some types will import, others will not. These are all in the same library and namespace.

These types have quite deep and complex inheritance so it is difficult to provide a minimalistic working example. The issue does seem to be related to that inheritance - if I edit them to remove the relationship with the base class, import succeeds. There is nothing 'wrong' with the base type however - I am able to import that without issue. This behaviour seems to stay the same even if I strip the inheriting type of all additional functionality except that required to implement the abstract type.

Are there known limitations about types that can be used?

I thought perhaps the type was somehow non-CLS compliant, given that it has some methods that are labelled as such, but I am able to use them without issue in Visual Basic and C#, suggesting that's not an issue.

Thanks

[LeeReid1]

I've since decided this was a bug mixed in with some user error.

See #1859