I get this on instantiating the clamped class from Java 7 on OS X.

stacktrace.txt

SEVERE: Servlet.service() for servlet [gx] in context with path [] threw exception [Handler processing failed; nested exception is java.lang.VerifyError: Inconsistent stackmap frames at branch target 89
Exception Details:
  Location:
    org/python/core/Py.exec(Lorg/python/core/PyObject;Lorg/python/core/PyObject;Lorg/python/core/PyObject;)V @89: aload_0
  Reason:
    Type top (current frame, locals[4]) is not assignable to integer (stack map, locals[4])
  Current Frame:
    bci: @6
    flags: { }
    locals: { 'org/python/core/PyObject', 'org/python/core/PyObject', 'org/python/core/PyObject', integer }
    stack: { integer }
  Stackmap Frame:
    bci: @89
    flags: { }
    locals: { 'org/python/core/PyObject', 'org/python/core/PyObject', 'org/python/core/PyObject', top, integer }
    stack: { }
  Bytecode:
    0000000: 033e 2ac1 0097 9900 532a c000 973a 0419
    0000010: 04b6 0507 3605 2bc6 000d 2bb2 012b b605
    0000020: 0899 0038 2cc6 000d 2cb2 012b b605 0899
    0000030: 002a 1505 05a1 0024 1505 06a3 001e 1904
    0000040: 03b6 050b 4b19 0404 b605 0b4c 1505 06a0
    0000050: 000a 1904 05b6 050b 4d2a c104 fb99 0025
    0000060: 2ac0 04fb 3a06 2cc7 0077 2ac1 04f3 9900
    0000070: 702a c004 f3b6 050e 9900 6613 0510 b802
    0000080: 02bf 013a 042a c101 4299 0019 2ac1 0153
    0000090: 9900 091d 1101 0080 3e2a b604 6c3a 04a7
    00000a0: 002d 2ac1 0512 9900 1f2a c005 123a 0519
    00000b0: 05b6 0515 9900 04b1 1905 b605 18b6 0519
    00000c0: 3a04 a700 0a13 051b b802 02bf 1904 1304
    00000d0: 6bb2 0520 1d03 b805 24b8 0528 3a06 1906
    00000e0: 2c2b b805 2a57 b1
  Stackmap Table:
    full_frame(@36,{Object[#153],Object[#153],Object[#153],Top,Integer,Object[#151],Integer},{})
    same_frame(@50)
    chop_frame(@89,2)
    same_frame(@130)
    append_frame(@153,Object[#208])
    same_frame(@162)
    append_frame(@184,Object[#1298])
    chop_frame(@197,1)
    same_frame(@204)
    full_frame(@222,{Object[#153],Object[#153],Object[#153],Object[#1275],Integer},{})
] with root cause
java.lang.VerifyError: Inconsistent stackmap frames at branch target 89
Exception Details:
  Location:
    org/python/core/Py.exec(Lorg/python/core/PyObject;Lorg/python/core/PyObject;Lorg/python/core/PyObject;)V @89: aload_0
  Reason:
    Type top (current frame, locals[4]) is not assignable to integer (stack map, locals[4])
  Current Frame:
    bci: @6
    flags: { }
    locals: { 'org/python/core/PyObject', 'org/python/core/PyObject', 'org/python/core/PyObject', integer }
    stack: { integer }
  Stackmap Frame:
    bci: @89
    flags: { }
    locals: { 'org/python/core/PyObject', 'org/python/core/PyObject', 'org/python/core/PyObject', top, integer }
    stack: { }
  Bytecode:
    0000000: 033e 2ac1 0097 9900 532a c000 973a 0419
    0000010: 04b6 0507 3605 2bc6 000d 2bb2 012b b605
    0000020: 0899 0038 2cc6 000d 2cb2 012b b605 0899
    0000030: 002a 1505 05a1 0024 1505 06a3 001e 1904
    0000040: 03b6 050b 4b19 0404 b605 0b4c 1505 06a0
    0000050: 000a 1904 05b6 050b 4d2a c104 fb99 0025
    0000060: 2ac0 04fb 3a06 2cc7 0077 2ac1 04f3 9900
    0000070: 702a c004 f3b6 050e 9900 6613 0510 b802
    0000080: 02bf 013a 042a c101 4299 0019 2ac1 0153
    0000090: 9900 091d 1101 0080 3e2a b604 6c3a 04a7
    00000a0: 002d 2ac1 0512 9900 1f2a c005 123a 0519
    00000b0: 05b6 0515 9900 04b1 1905 b605 18b6 0519
    00000c0: 3a04 a700 0a13 051b b802 02bf 1904 1304
    00000d0: 6bb2 0520 1d03 b805 24b8 0528 3a06 1906
    00000e0: 2c2b b805 2a57 b1
  Stackmap Table:
    full_frame(@36,{Object[#153],Object[#153],Object[#153],Top,Integer,Object[#151],Integer},{})
    same_frame(@50)
    chop_frame(@89,2)
    same_frame(@130)
    append_frame(@153,Object[#208])
    same_frame(@162)
    append_frame(@184,Object[#1298])
    chop_frame(@197,1)
    same_frame(@204)
    full_frame(@222,{Object[#153],Object[#153],Object[#153],Object[#1275],Integer},{})

	at jythonpoc.jythonpoc.jythonpoc.ClampedFooSayer.<init>(Unknown Source)
	at com.mktgcentral.galaxy.util.FooSayer.<init>(FooSayer.java:14)