which catalyst version are you using?
13-1_vista_win7_win8_64_dd_ccc_whql
and
SDK 12.9
Another user wrote that catalyst 13.1 does not work. same problem. please update the driver
try to 13.12,it's OK
[WORKER1] share found: 47542446 <-> 23048227 #278 (18510) @ 1390964351
[STATS] 2014-Jan-29 10:03:46 | 3278.12 c/m | 49.06 sh/m | VL: 216 (99.08%)
2 (0.92%), ST: 0 (0.00%)
[WORKER1] share found: 14390109 <-> 59640650 #279 (18584) @ 1390964373
[WORKER0] share found: 56117766 <-> 53405478 #280 (18766) @ 1390964440
[WORKER0] share found: 56011260 <-> 12477005 #281 (18886) @ 1390964474
[WORKER0] share found: 23711366 <-> 53320897 #282 (19050) @ 1390964530
[WORKER0] share found: 53238056 <-> 9688937 #283 (19080) @ 1390964538
[WORKER0] share found: 38155706 <-> 42210330 #284 (19142) @ 1390964558
[WORKER1] share found: 43616931 <-> 46186387 #285 (19162) @ 1390964539
[STATS] 2014-Jan-29 10:03:56 | 3284.91 c/m | 48.86 sh/m | VL: 222 (99.11%)
2 (0.89%), ST: 0 (0.00%)
[WORKER1] share found: 57056053 <-> 30333989 #286 (19180) @ 1390964543
[WORKER0] share found: 37509216 <-> 161646 #287 (19266) @ 1390964588
[WORKER1] share found: 60494598 <-> 61284186 #288 (19660) @ 1390964679
[WORKER1] share found: 19190590 <-> 11028309 #289 (19726) @ 1390964693
[WORKER0] share found: 46305233 <-> 40334684 #290 (19768) @ 1390964730
[STATS] 2014-Jan-29 10:04:06 | 3294.67 c/m | 48.33 sh/m | VL: 227 (99.13%)
2 (0.87%), ST: 0 (0.00%)
[WORKER0] share found: 5031941 <-> 34767294 #291 (19774) @ 1390964732
[WORKER1] share found: 63154609 <-> 39599691 #292 (19932) @ 1390964747
[WORKER1] share found: 18337791 <-> 59469530 #293 (19978) @ 1390964759
[WORKER0] share found: 56476755 <-> 37374914 #294 (20228) @ 1390964844
[WORKER0] share found: 35894059 <-> 10143253 #295 (20312) @ 1390964868