Well, since the board layout seems to be ok, then there are only a couple of possibilities:

1) You've got one or more dead components.

2) There's a wiring/installation error. Double-check your work carefully. Look for the usual suspects, like backwards-polarity diodes, incorrect polarities for electrolytic capacitors, chips upside-down, cold solder joints, solder blobs that short adjacent traces, etc. Use a voltmeter to verify that power is where it's supposed to be. Feel if any components are hot (none should even be warm in this low-power circuit)