I don't see any obvious errors, but I can't see the resistor colors or the precise placement of most of the components. Lug 3 of the filter pot feeds the output cap, so if the circuit is totally dead, you still might get output at when the filter pot is fully CW, but it wouldn't be fuzzy.
Can you take DC voltage readings on the pins of the IC?
The voltage on pins 2 and 6 is bad. It should be pretty close to what you get on pin 3.
Which build is this?
My suspicion is that the problem relates to the 2M resistor, but the photos aren't clear enough for me to see very much. Whichever build this is, if you post hi-resolution photos of both sides, from a few different angles, I may be able to spot something.
In the meantime, measure the resistance across that 2M resistor. Also try re-melting the solder on both legs of that resistor.
Edit: I just noticed that your build from Zach's layout has both 1u caps reversed. Throw them away (I wouldn't re-use them for this build or anything else) and replace them with fresh ones in the right orientation and report back.