i've tried to change the port from 3389 to 3388 and backwards...
i've tried the second ccminer.exe file that comes along on the zip file...
ive tried changing the difficulty level...
(by the way, if i put this command: --difficulty-multiplier 0.0039062500 or --difficulty-multiplier=0.0039062500 the file wont run... it shuts down...)
Also use --normal-hashing 1 and --difficulty-multiplier 0.0039062500
Sorry I had to take a nap, been busy lately ... try http://utahjohn.ddns.net I am mining fine there in USA
I use advanced sgminer.conf but these should work command line with batch file ...
Also if u are using catalyst 14.9 this can also be a problem ... revert to catalyst 14.7 RC3
See https://bitcointalksearch.org/topic/x11mod-x13mod-x15-and-catalyst-147-rc-666252