Объясните, пожалуйста, что это за беда и как с ней бороться:
2014-01-04 20:39:36.344000 > Error:
2014-01-04 20:39:36.345000 > Traceback (most recent call last):
2014-01-04 20:39:36.346000 > File "twisted\internet\defer.pyc", line 576, in _
runCallbacks
2014-01-04 20:39:36.347000 >
2014-01-04 20:39:36.347000 > File "twisted\internet\defer.pyc", line 1127, in
gotResult
2014-01-04 20:39:36.348000 >
2014-01-04 20:39:36.348000 > File "twisted\internet\defer.pyc", line 1069, in
_inlineCallbacks
2014-01-04 20:39:36.349000 >
2014-01-04 20:39:36.349000 > File "twisted\python\failure.pyc", line 389, in t
hrowExceptionIntoGenerator
2014-01-04 20:39:36.350000 >
2014-01-04 20:39:36.350000 > --- <exception caught here> ---
2014-01-04 20:39:36.351000 > File "p2pool\util\deferral.pyc", line 41, in f
2014-01-04 20:39:36.352000 >
2014-01-04 20:39:36.352000 > File "twisted\internet\defer.pyc", line 1069, in
_inlineCallbacks
2014-01-04 20:39:36.353000 >
2014-01-04 20:39:36.353000 > File "twisted\python\failure.pyc", line 389, in t
hrowExceptionIntoGenerator
2014-01-04 20:39:36.354000 >
2014-01-04 20:39:36.355000 > File "p2pool\util\deferral.pyc", line 172, in __c
all__
2014-01-04 20:39:36.355000 >
2014-01-04 20:39:36.356000 > File "twisted\internet\defer.pyc", line 1069, in
_inlineCallbacks
2014-01-04 20:39:36.356000 >
2014-01-04 20:39:36.357000 > File "twisted\python\failure.pyc", line 389, in t
hrowExceptionIntoGenerator
2014-01-04 20:39:36.357000 >
2014-01-04 20:39:36.358000 > File "p2pool\bitcoin\height_tracker.pyc", line 98
, in height_cacher
2014-01-04 20:39:36.359000 >
2014-01-04 20:39:36.359000 > File "twisted\internet\defer.pyc", line 1069, in
_inlineCallbacks
2014-01-04 20:39:36.359000 >
2014-01-04 20:39:36.360000 > File "twisted\python\failure.pyc", line 389, in t
hrowExceptionIntoGenerator
2014-01-04 20:39:36.361000 >
2014-01-04 20:39:36.361000 > File "p2pool\util\jsonrpc.pyc", line 133, in _htt
p_do
2014-01-04 20:39:36.362000 >
2014-01-04 20:39:36.363000 > p2pool.util.jsonrpc.NarrowError: -2 Safe mode: WARN
ING: Invalid checkpoint found! Displayed transactions may not be correct! You ma
y need to upgrade, or notify developers.