Hi, do you get an error message with the portable version?
Indeed, same problem here. I guess this is a new bug.
File "electrum", line 398, in
addr += ':' + str(wallet.get_private_key_base58(addr, password))
File "C:\Documents and Settings\ffly\Application Data\Electrum-P\0.55\C_\ElectrumPY\lib\wallet.py", line 388, in get_private_key_base58
pk = self.get_private_key(address, password)
File "C:\Documents and Settings\ffly\Application Data\Electrum-P\0.55\C_\ElectrumPY\lib\wallet.py", line 409, in get_private_key
raise BaseException("unknown address")
BaseException: unknown address
- No error message. It locked up (in German: it hangs)