Hi there, as pointed out in http://forum.unity3d.com/threads/smart-merge-not-working.315903/, Unity adds the keyword "stripped" after the object identifier/document boundary marker in the scene files. As far as I understand this does not match the YAML specifications and hence is invalid YAML - according to: http://yaml.org/spec/1.1/#document boundary marker/. All standard YAML parsers fail to parse scene files which contain a "stripped" keyword near to the document boundary - resulting in a "mapping values are not allowed in this context" exception. Test case: Enter this in http://www.yamllint.com/ and try to parse it by clicking "Go". Also tested with YamlDotNet from https://github.com/aaubry/YamlDotNet, which supports multi-document streams with this patch: https://github.com/aaubry/YamlDotNet/pull/142. Any suggestions? Shouldn't you stick to the standard specifications? Or am I just missing something?