Asadm -e collectinfo fails with JSON error

Admin> collectinfo;
INFO: Data collection for Snapshot: 1 in progress..
INFO: Dumping collectinfo in JSON format.
ERROR: Failed to write JSON file: ValueError("invalid literal for int() with base 10: '8605.4'",) is not JSON serializable
INFO: Data collection for _write_version  in progress..
INFO: Data collection for  ['network']  in progress..
INFO: Data collection for  ['namespace']  in progress..
INFO: Data collection for  ['set']  in progress..
INFO: Data collection for  ['xdr']  in progress..
INFO: Data collection for  ['dc']  in progress..
INFO: Data collection for  ['sindex']  in progress..
INFO: Data collection for  ['config']  in progress..
INFO: Data collection for  ['config', 'xdr']  in progress..
INFO: Data collection for  ['config', 'dc']  in progress..
INFO: Data collection for  ['config', 'cluster']  in progress..
INFO: Data collection for  ['distribution']  in progress..
INFO: Data collection for  ['distribution', 'eviction']  in progress..
INFO: Data collection for  ['distribution', 'object_size', '-b']  in progress..
INFO: Data collection for  ['latency']  in progress..
INFO: Data collection for  ['statistics']  in progress..
INFO: Data collection for  ['statistics', 'xdr']  in progress..
INFO: Data collection for  ['statistics', 'dc']  in progress..
INFO: Data collection for  ['statistics', 'sindex']  in progress..
INFO: Data collection for  ['pmap']  in progress..
INFO: Data collection for  ['features']  in progress..
INFO: Data collection for  service  in progress..
INFO: Data collection for  services  in progress..
INFO: Data collection for  hist-dump:ns=test;hist=ttl  in progress..
INFO: Data collection for  hist-dump:ns=test;hist=objsz  in progress..
INFO: Data collection for  hist-dump:ns=product_quality;hist=ttl  in progress..
INFO: Data collection for  hist-dump:ns=product_quality;hist=objsz  in progress..
ERROR: No JSON object could be decoded
Traceback (most recent call last):
  File "/usr/bin/asadm/asadm.py", line 278, in precmd
    response = self.ctrl.execute(line)
  File "/usr/bin/asadm/lib/controllerlib.py", line 200, in execute
    results = method(line)
  File "/usr/bin/asadm/lib/controllerlib.py", line 128, in __call__
    return self.execute(line)
  File "/usr/bin/asadm/lib/controllerlib.py", line 200, in execute
    results = method(line)
  File "/usr/bin/asadm/lib/basiccontroller.py", line 1545, in _do_default
    self._collect_info(line=line)
  File "/usr/bin/asadm/lib/basiccontroller.py", line 1521, in _collect_info
    show_all=show_all, verbose=verbose, output_prefix=output_prefix)
  File "/usr/bin/asadm/lib/basiccontroller.py", line 1471, in _main_collectinfo
    self._dump_collectinfo_pretty_print(timestamp, as_logfile_prefix, show_all=show_all, verbose=verbose)
  File "/usr/bin/asadm/lib/basiccontroller.py", line 1308, in _dump_collectinfo_pretty_print
    collectinfo_root_controller = CollectinfoRootController(asadm_version=self.asadm_version, clinfo_path=self.aslogdir)
  File "/usr/bin/asadm/lib/collectinfocontroller.py", line 45, in __init__
    CollectinfoRootController.loghdlr = CollectinfoLoghdlr(clinfo_path)
  File "/usr/bin/asadm/lib/collectinfo/loghdlr.py", line 55, in __init__
    snapshot_added, err_cinfo = self._add_cinfo_log_files(cinfo_path)
  File "/usr/bin/asadm/lib/collectinfo/loghdlr.py", line 257, in _add_cinfo_log_files
    cinfo_log = CollectinfoLog(cinfo_path, files, self.reader)
  File "/usr/bin/asadm/lib/collectinfo/cinfolog.py", line 337, in __init__
    parse_info_all(files, self.data, True)
  File "/usr/bin/asadm/lib/collectinfo_parser/full_parser.py", line 55, in parse_info_all
    cinfo_map = json.load(cinfo_json, object_hook=_stringify)
  File "/usr/lib/python2.7/json/__init__.py", line 291, in load
    **kw)
  File "/usr/lib/python2.7/json/__init__.py", line 352, in loads
    return cls(encoding=encoding, **kw).decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 364, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

Have you tried with a newer version of asadm?