HTTP 500 error ... no applicable method ...

Hi, I'm seeing the following HTTP 500 error:

There is no applicable method for the generic function
  #<STANDARD-GENERIC-FUNCTION CL-QUIL::PRINT-INSTRUCTION (24)>
when called with arguments
  (18 #<SYNONYM-STREAM :SYMBOL SB-SYS:*STDOUT* {1000014153}>).
...
requests.exceptions.HTTPError: 500 Server Error: Internal Server Error for url: https://api.rigetti.com/qvm

Here's a repro:

import pyquil.forest as qvm
import pyquil.quil as pq

def prog_from_file(filepath):
    """Make a Program from a file
    """
    p = pq.Program()
    with open(filepath) as fp:
        for line in fp:
            p.inst(line.rstrip('\n'))
    return p

if __name__ == '__main__':
    p = prog_from_file('/path/to/repro.quil')  # cleaner way to get a Program from a file?
    print p
    print qvm.Connection().run_and_measure(p, [2,3], 1)
    #print qvm.Connection().run(p, [2,3], 1)  # note that run appears to work

repro.quil:

X 5
X 0
H 1
CNOT 1 2
H 3
CNOT 3 4
CNOT 3 2
CNOT 5 4
H 5
MEASURE 5 [5]
MEASURE 4 [4]
CNOT 0 1
H 0
MEASURE 0 [0]
MEASURE 1 [1]
CNOT 3 2
JUMP-WHEN @THEN1 [1]
JUMP @END2
LABEL @THEN1
X 2
LABEL @END2
JUMP-WHEN @THEN7 [4]
JUMP @END8
LABEL @THEN7
X 3
LABEL @END8
JUMP-WHEN @THEN3 [0]
JUMP @END4
LABEL @THEN3
Z 2
LABEL @END4
JUMP-WHEN @THEN5 [5]
JUMP @END6
LABEL @THEN5
Z 3
LABEL @END6
CNOT 2 3

@tarballs-are-good Any clarification on the error and what triggers it? Thanks!

rigetti / pyquil

HTTP 500 error ... no applicable method ... #11