Probably there is one more text line after that line in red, it contains something like "Wrongworkernameorpassword".
Is it possible to run the HD 6990? it would be great if somebody suggested how to do it

The following error swears on OpenCL
10:56:35:212 ac8
10:56:35:212 ac8 ЙHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH»
10:56:35:212 ac8 є Claymore's Dual Ethereum + Decred AMD GPU Miner v3.0 Beta є
10:56:35:228 ac8 ИHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHj
10:56:39:978 ac8
Cards available: 4
10:56:39:994 ac8 GPU #0: name: Cayman, 2048 MB available, 24 units
10:56:39:994 ac8 GPU #1: name: Cayman, 2048 MB available, 24 units
10:56:39:994 ac8 GPU #2: name: Cayman, 2048 MB available, 24 units
10:56:39:994 ac8 GPU #3: name: Cayman, 2048 MB available, 24 units
10:56:40:009 ac8 Total cards: 4
10:56:40:009 ac8 Initializing...
10:56:40:025 ac8 POOL version
10:56:40:025 ac8 b112
10:57:02:337 ac8 GPU #0: set -etha as 1 (ETH algo for slow cards)
10:57:02:337 ac8 GPU #1: set -etha as 1 (ETH algo for slow cards)
10:57:02:509 ac8 GPU #2: set -etha as 1 (ETH algo for slow cards)
10:57:02:525 ac8 GPU #3: set -etha as 1 (ETH algo for slow cards)
10:57:03:244 ac8 DUAL MINING MODE ENABLED: ETHEREUM+DECRED
10:57:03:322 d0c ETH: Stratum - connecting to 'coinotron.com' <178.217.186.125> port 3344
10:57:03:572 edc DCR: Stratum - connecting to 'dcr.pool.mn' <136.243.50.159> port 4800
10:57:04:119 ac8 Decred HTTP requests time (-dcrt) is set to 10
10:57:04:119 ac8 miner-proxy stratum mode
10:57:04:134 ac8 "-allpools" option is set, default pools can be used for devfee, check "Readme" file for details.
10:57:04:134 ac8
10:57:04:228 edc send: {"id": 1, "method": "mining.subscribe", "params": ["dcr 1.0"]}
10:57:04:228 edc send: {"id": 5, "method": "mining.extranonce.subscribe", "params": []}
10:57:04:228 edc send: {"id": 2, "method": "mining.authorize", "params": ["dolinskii.6990","x"]}
10:57:04:228 edc DCR: Stratum - Connected
10:57:04:228 d0c send: {"id": 1, "method": "mining.subscribe", "params": []}
10:57:04:244 d0c send: {"id": 2, "method": "mining.authorize", "params": ["dolinskii.miner2","x"]}
10:57:04:244 d0c ETH: Stratum - Connected
10:57:04:353 edc got 593 bytes
10:57:04:353 edc buf: {"error": null, "id": 1, "result": [["mining.notify", "ae6812eb4cd7735a302a8a9dd95cf71f"], "00000000f8031078f8031078", 12]}
{"params": [1], "id": null, "method": "mining.set_difficulty"}
{"params": ["3f27", "3bf1ef1276719f0b45fa1577a9af97aa85be40a036d743e900002b6f00000000", "d48bbb19612c566bb3a2570479a2ed8914ece5965e1e13b1fb7ff3e6291c84f7bdfbfdbcfea3d5c
b74590b70e14ca9fb806ada63245a1f6f275c0e76e584638c0100d930c9bd79c004000000b1ab00
000acf2b1ad1dd09ec00000000a051000019070000e90b17570000000000000000", "", [], "01000000", "1a2bcf0a", "57170be9", true], "id": null, "method": "mining.notify"}
10:57:04:353 edc parse packet: 116
10:57:04:353 edc remove first packet 451
10:57:04:353 edc new buf size: 451
10:57:04:353 edc parse packet: 58
10:57:04:353 edc remove first packet 393
10:57:04:353 edc new buf size: 393
10:57:04:353 edc parse packet: 393
10:57:04:353 edc new buf size: 0
10:57:04:369 d0c got 107 bytes
10:57:04:369 d0c buf: {"error": null, "id": 1, "result": [["mining.notify", "1ead3d0dd7d04684a698f6a680bf876f"], "080033DC", 4]}
10:57:04:369 d0c parse packet: 99
10:57:04:369 d0c new buf size: 0
10:57:04:494 d0c got 343 bytes
10:57:04:494 d0c buf: { "id": null, "method": "mining.set_difficulty", "params": [55000]}
{"params": ["41755", "0x9d8dc43e021223e8e44ba06cbbc5b03a9cd46304ee18a0700e532f87c02ad713","0x013d5197a3a035144a79e3e09dfec2505039ed176d81a0957e229886ddbee49b","0x00000001310A508148DF1ECB62908D334643D83B47C1251FE95C3C06679770B6", true], "id": null, "method": "mining.notify"}
10:57:04:494 d0c parse packet: 62
10:57:04:494 d0c remove first packet 268
10:57:04:494 d0c new buf size: 268
10:57:04:494 d0c parse packet: 268
10:57:04:494 d0c eth: job changed
10:57:04:494 d0c new buf size: 0
10:57:04:556 3a8 Need to check DAG file (epoch #45), starting...
10:57:04:806 d0c got 101 bytes
10:57:04:806 d0c buf: {"error": null, "id": 2, "result": true}
{ "id": 9876, "method": "client.get_version", "params": []}
10:57:04:806 d0c parse packet: 36
10:57:04:806 d0c Authorized
10:57:04:806 d0c remove first packet 54
10:57:04:806 d0c new buf size: 54
10:57:04:806 d0c parse packet: 54
10:57:04:806 d0c send: {"error": null, "jsonrpc": "id": 9876, "result": "eth 1.0"}
10:57:04:806 d0c new buf size: 0
10:57:11:634 d0c got 275 bytes
10:57:11:634 d0c buf: {"params": ["41758", "0xc447cb2844cc09fbc169c4e0a5b2c19ca0f7f592c6be5de6e8126e3c6c052881","0x013d5197a3a035144a79e3e09dfec2505039ed176d81a0957e229886ddbee49b","0x00000001310A508148DF1ECB62908D334643D83B47C1251FE95C3C06679770B6", true], "id": null, "method": "mining.notify"}
10:57:11:634 d0c parse packet: 268
10:57:11:634 d0c eth: job changed
10:57:11:634 d0c new buf size: 0
10:57:11:634 d0c ETH: 04/20/16-10:57:11 - New job (target 0x00000001310a5081) from coinotron.com:3344
10:57:11:634 d0c ETH - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0, Time: 00:00
10:57:11:634 d0c ETH: GPU0 0.000 Mh/s, GPU1 0.000 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s
10:57:11:650 d0c DCR - Total Speed: 0.000 Mh/s, Total Shares: 0, Rejected: 0
10:57:11:650 d0c DCR: GPU0 0.000 Mh/s, GPU1 0.000 Mh/s, GPU2 0.000 Mh/s, GPU3 0.000 Mh/s
10:57:11:931 3a8 DAG file (epoch #45) is ok.
10:57:11:931 3a8 Need to check next DAG file (epoch #46) in background, starting...
10:57:11:931 3a8 Applying DAG epoch #45 for GPU #0
10:57:11:931 3a8 Create GPU buffer for GPU #0
10:57:11:931 3a8 OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
10:57:11:994 524 Applying DAG epoch #45 for GPU #1
10:57:11:994 524 Create GPU buffer for GPU #1
10:57:11:994 524 OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
10:57:11:994 e98 Applying DAG epoch #45 for GPU #2
10:57:12:009 e98 Create GPU buffer for GPU #2
10:57:12:009 e98 OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
10:57:12:009 db0 Applying DAG epoch #45 for GPU #3
10:57:12:009 db0 Create GPU buffer for GPU #3
10:57:12:025 db0 OpenCL error - cannot allocate big buffer for DAG. Check readme.txt for possible solutions.
10:57:14:353 edc got 488 bytes
10:57:14:353 edc buf: {"error": null, "id": 5, "result": true}
{"error": null, "id": 2, "result": true}
{"params": ["4171", "3bf1ef1276719f0b45fa1577a9af97aa85be40a036d743e900002b6f00000000", "90e8447c0d4e07664d047b2ad87b44f6903f4d7b2b0736d54100d7df42a2592ccce6230d782a8fa
cafa27c5a09c14fe66e3e1d16f9f15d6e3314b8f3f50507740100d930c9bd79c004000000b1ab00
000acf2b1ad1dd09ec00000000a0510000b20a0000250c17570000000000000000", "", [], "01000000", "1a2bcf0a", "57170c25", true], "id": null, "method": "mining.notify"}
10:57:14:353 edc parse packet: 36
10:57:14:353 edc remove first packet 429
10:57:14:353 edc new buf size: 429
10:57:14:353 edc parse packet: 36
10:57:14:353 edc Authorized
10:57:14:353 edc remove first packet 393
10:57:14:353 edc new buf size: 393
10:57:14:353 edc parse packet: 393
10:57:14:353 edc new buf size: 0
10:57:14:369 edc DCR: 04/20/16-10:57:14 - New job (target 0x00000000ffff0000, block #20896) from dcr.pool.mn:4800
10:57:14:931 994 Applying DAG epoch #45 for GPU #0
10:57:14:931 994 OpenCL error - cannot write big buffer with DAG
10:57:15:009 d80 Applying DAG epoch #45 for GPU #1
10:57:15:009 d80 OpenCL error - cannot write big buffer with DAG
10:57:15:009 be4 Applying DAG epoch #45 for GPU #2
10:57:15:009 be4 OpenCL error - cannot write big buffer with DAG
10:57:15:087 8dc Applying DAG epoch #45 for GPU #3
10:57:15:103 8dc OpenCL error - cannot write big buffer with DAG
10:57:34:322 ac8 watchdog - thread 0, hb time 19235
10:57:34:353 ac8 watchdog - thread 1, hb time 19235
10:57:34:353 ac8 watchdog - thread 2, hb time 19235
10:57:34:353 ac8 watchdog - thread 3, hb time 19235
10:57:34:353 ac8 watchdog - thread 4, hb time 19235
10:57:34:353 ac8 watchdog - thread 5, hb time 19235
10:57:34:353 ac8 watchdog - thread 6, hb time 19235
10:57:34:353 ac8 watchdog - thread 7, hb time 19235
10:57:34:369 ac8 WATCHDOG: GPU error, you need to restart miner
10:57:34:369 ac8 Restarting OK, exit...