Errors on Xibo Client during/after download from Xibo Server

Hi.
I'm a new Xibo user and I need to solve as soon as possible some issues on Xibo.
I will describe below what appens, including report of errors displayed.

Errors occurring when downloading media files on Xibo Client (Ubuntu 12.04) from Xibo Server.
Xibo Client release is 1.6.0rc2.

There's an incomplete files download on Xibo Client: for this reason scheduling doesn't start (no media files are displayed on Xibo Client).

Xibo Client PC: some Asus Vivo PC mod. VC-60 (CPU: Intel i3; RAM: 4GB; HDD: 500GB; Graphics: Intel 4000)

Exception in thread Thread-42:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "XiboClient.py", line 1485, in run
    self.downloadMedia()
  File "XiboClient.py", line 1540, in downloadMedia
    response = self.parent.xmds.GetFile(self.tmpFileName,self.tmpType,self.offset,self.chunk)
  File "XiboClient.py", line 3677, in GetFile
    if self.check():
  File "XiboClient.py", line 3401, in check
    if not in_period(config.get('Main','connectionPeriod')):
  File "/opt/xibo/pyclient/client/python/ThirdParty/period/period.py", line 252, in in_period
    s.push(_check_timespec(item, now))
  File "/opt/xibo/pyclient/client/python/ThirdParty/period/period.py", line 291, in _check_timespec
    raise Exception, "Bad time specification: %s" % timespec
Exception: Bad time specification: lways

Exception in thread Thread-40:
Traceback (most recent call last):
  File "/usr/lib/python2.7/threading.py", line 551, in __bootstrap_inner
    self.run()
  File "XiboClient.py", line 1485, in run
    self.downloadMedia()
  File "XiboClient.py", line 1540, in downloadMedia
    response = self.parent.xmds.GetFile(self.tmpFileName,self.tmpType,self.offset,self.chunk)
  File "XiboClient.py", line 3677, in GetFile
    if self.check():
  File "XiboClient.py", line 3401, in check
    if not in_period(config.get('Main','connectionPeriod')):
  File "/opt/xibo/pyclient/client/python/ThirdParty/period/period.py", line 234, in in_period
    periodcode = _syntax.flatten(_parser.parse(period))
  File "/opt/xibo/pyclient/client/python/ThirdParty/period/period.py", line 54, in parse
    tok = self.get_token()
  File "/opt/xibo/pyclient/client/python/ThirdParty/period/period.py", line 93, in get_token
    tok = tok + self.str[self.i]
IndexError: string index out of range

Thanks a lot to all Xibo Developers & users!

Waiting a fast reply, have a good time!
Bye!
Theo.