Hmmm I'm not sure bud. I found this for your previous error message:

3.21 Protocol xxx not supported or disabled in libcurl

When passing on a URL to curl to use, it may respond that the particular protocol is not supported or disabled. The particular way this error message is phrased is because curl doesn't make a distinction internally of whether a particular protocol is not supported (i.e. never got any code added that knows how to speak that protocol) or if it was explicitly disabled. curl can be built to only support a given set of protocols, and the rest would then be disabled or not supported.

Note that this error will also occur if you pass a wrongly spelled protocol part as in "htpt://example.com" or as in the less evident case if you prefix the protocol part with a space as in " http://example.com/".

If you're still stuck hopefully someone more knowledgable will come along and shed some light.

Edit: In my command line for cgminer I use "stratum.btcguild.com:3333" to connect, not sure if it's the same with minerd.