Client starten problem

When I start the client this error appear

system.py(line 273) RunMainScript
system.py(line 192) execfile
system.py(line 163) Run
prototype.py(line 63) ?
prototype.py(line 51) RunApp
networkModule.py(line 171) SetLoginPhase
system.py(line 130)_pack_import
system.py(line 110)_process_result
introLogin.py(line 26) ?

Run-exceptions.ImportError:cannot import name FancyURLopener.

So, if somebody can tell me which is the problem and how can I solve it.
Thanks

Re-install Client if this error still alive after re-install
Download another Client ;D

Problem solved.It was from client libs

Can close thread

#closed