SPI woes

Identical behavior when I changed my code to this:

SPI2.setup({scl:B13,miso:B14,mosi:B15,baud:1000000});

digitalWrite(C4,1);

var digipot=require("MCP4xxxSPI").connect(SPI2,C4,1,128);

Interestingly enough, once it has worked, reset() doesn't make it stop working. IE, if I do the above, then fs.readdir(), then press "send to espruino" again (resetting the espruino), it works immediately without having to do anything.

It's something in the espruino - if I power cycle the part after making it with with fs, it continues to work.