What version of Go are you using (go version)?
1.5.1

What operating system and processor architecture are you using?
windows 7; Intel i3

What did you do?
testing x/net/webdav package on Windows

What did you expect to see?
A listing of Files of the webdav root inside explorer

What did you see instead?
an error .-)

The sample with the mem filesystem worked fine, but the Dir Filesystem doesn't.
The error is caused by a setting of a struct at line 134 of file prop.go

The comment says:
...
105: // dir is true if the property applies to directories.
106: dir bool
...

...
131: xml.Name{Space: "DAV:", Local: "getcontenttype"}: {
132: findFn: findContentType,
133: // dir: true, // <- this setting causes the error
134: dir: false, // <- setting it to false works fine
135: },
...

If dir is true the findContenttype is called for a Directory and that causes an error. I solved the problem this way and i don't know wether a directory could have a Content-Type. I don' think so.

thanks, Horst Noreick

Edit: the finename prop.go