Single Path SVG Union FAIL

[snowflaxgit]

Hey,

We tried SVG attached and try to weld a Union here, but it fails
http://awesomescreenshot.com/0d2266nd22

It fails on corner and produced weird output.Can you please help.I found tool fail for most of SVG we used,Please try on
http://vibsy.com/downloads/ForDemo.svg

others
http://vibsy.com/downloads/Error_1.svg
http://vibsy.com/downloads/Error_2%20%28Original%29.svg