Help Me troubleshoot

[17asleep]

Hello all. My first post here.
I did this cheddar about a month and a half ago. It looked wonderful and I was quite impressed with myself for getting such good results after only having made three or four cheeses. Anyways, about two weeks after I waxed it, it started swelling and burst the wax. There was a strong sour smell to go with the physical changes that you can see in the pictures. Thanks in advance for any help.

[Schnecken Slayer]

Assuming everything was sterilised before hand then a sour smell isn't a good sign.
Was this raw or store bought milk? What else where you doing/making at the time?

[17asleep]

It was raw milk and I was not really doing anything else at the time.

[margaretsmall]

It looks like gas bubbles, doesn't it. You weren't making bread at the same time? If it smells bad it could well be some sort of contamination. I don't use raw milk much, so maybe someone more experienced can given a better opinion.  But it doesn't seem promising to me.
Margaret