Hi Petr,

About the attachments functionality:

I've implemented this in our version using the full AliasPath for an attachment (also making a cms.file a friendly url aware document type).
This means the file isn't accessible through the ParentPath+filename.

I've also changed the TreeNode not to replace dots with _, so the path is almost the same, with some exceptions.

Would it be possible to take this into account for future development, I would also think it is somewhat more logical to always access a document through it's full aliaspath, in your case the cms.file's alias isn't used.