can you give me some more information please. Version, Algo, pool?
Also, if you have some space left on your HD you can create a logfile that conrains more information. To create that just add the option -logpool to the commandline. TT-Miner will then create a logfile with information of the communication with the pool that could be helpful.
Thanks.
Version - TT-Miner_2.1.4
Pool - mintpond.com
Algo - MTP
-logpool enabled
Switched on 2.1.5