Crash on unknown async method

[hsoft]

I've been receiving these crashes lately:

@@@
Traceback (most recent call last):
File "threading.pyc", line 713, in _bootstrap
File "threading.pyc", line 753, in _bootstrap_inner
File "traceback.pyc", line 269, in format_exc
File "traceback.pyc", line 186, in format_exception
File "traceback.pyc", line 75, in format_tb
File "traceback.pyc", line 100, in extract_tb
File "linecache.pyc", line 15, in getline
File "linecache.pyc", line 41, in getlines
File "linecache.pyc", line 127, in updatecache
File "codecs.pyc", line 300, in decode
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf9 in position
4: invalid start byte
@@@

I think that they're related to currency fetching. I'm guessing that a unhandled error is mishandled by the thread or something like that. I should try to catch all exception in the async currency fetcher and log a warning for the unknown exception caught.

[hsoft]

(from [2bc1d122184b]) [#341 state:fixed] Handle and log all exceptions during async currency rates fetching.
https://bitbucket.org/hsoft/moneyguru/changeset/2bc1d122184b/