How to debug or find where or which error is causing the problem

[ForgottenNot]

Hi

Have debugged specific functions in the past now i have an error with sources but i don't know where specifically the error is
i get this packet.log by otcv8

ProtocolGame parse message exception (701 bytes, 471 unread, last opcode is 0x64 (100), prev opcode is 0x0a (10), proto: 860): invalid thing id (0)
bc 02 dd 5a d1 60 b5 02 43 06 00 0d 00 11 01 19 01 50 01 68 01 6a 01 32 00 00 00 a0 47 04 47 04 ff ff ff ff e8 54 b6 07 c8 00 00 47 04 47 04 00 00 00 d8 09 a0 47 04 47 04 ff ff ff ff e8 54 b6 07 c8 00 00 47 04 47 04 00 00 00 d8 09 a0 47 04 47 04 ff ff ff ff e8 54 b6 07 c8 00 00 47 04 47 04 00 00 00 d8 09 a0 47 04 47 04 ff ff ff ff e8 54 b6 07 c8 00 00 47 04 47 04 00 00 00 d8 09
0a 03 00 00 10 32 00 01
64 f7 03 02 04 07 4a ff 60 01 00 ff 5f 01 00 ff 63 01 0b ff 62 01 00 ff 60 01 00 ff 63 01 0b ff 5f 01 00 ff 5f 01 00 ff 5f 01 0b ff 5f 01 00 ff 63 01 61 00 00 00 00 00 03 00 00 10 07 00 47 4d 20 52 61 74 78 64 00 8b 00 67 4e 1b 7a 03 00 00 00 00 00 00 00 00 ff 00 dc 05 00 00 00 00 00 ff 5f 01 0b ff 5f 01 00 ff 5f 01 00 ff 5f 01 ff ff ff ff ff ff ff ff ff ff ff ff ff ff 5a ff 83 f7 03 02 04 07 0b 79 01 79 02 78 03 26 0b 79 04 78 05 53 0c 58 78 06 d7 0b 28 79 07 79 08 79 09 78 0a db 0b 44 a0 47 04 47 04 ff ff ff ff e8 54 b6 07 c8 00 00 47 04 47 04 00 00 00 d8 09 a1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 82 ff d7 8d 03 00 00 10 ff 00 a2 00 00 ac 0b 00 04 00 4c 6f 6f 74 b4 14 99 00 21 61 75 74 6f 6c 6f 6f 74 20 65 64 69 74 28 43 6f 6d 6d 61 6e 64 20 74 6f 20 75 73 65 20 61 75 74 6f 6c 6f 6f 74 29 2e 20 4c 6f 6f 74 20 43 68 61 6e 6e 65 6c 2c 20 43 61 70 74 75 72 65 20 74 68 65 20 66 6c 61 67 20 65 76 65 6e 74 2c 20 52 65 61 6c 20 6d 61 70 20 77 69 74 68 20 72 65 61 6c 20 61 6e 64 20 6f 6c 64 20 6d 65 63 68 61 6e 69 63 73 2e 20 4e 65 77 20 6d 6f 6e 73 74 65 72 20 41 49 20 26 20 4d 6f 6e 73 74 65 72 20 53 74 72 61 74 65 67 69 65 73 21 b4 18 0f 00 57 65 6c 63 6f 6d 65 20 74 6f 20 52 50 47 21 b4 12 65 00 44 69 73 63 6f 72 64 3a 20 68 74 74 70 73 3a 2f 2f 64 69 73 63 6f 72 64 2e 67 67 2f 52 37 4e 77 38 6d 37 52 20 20 2f 2f 20 57 65 62 73 69 74 65 3a 20 66 6f 72 67 6f 74 74 65 6e 6e 6f 74 2e 6f 6e 6c 69 6e 65 2e 20 4d 65 73 73 61 67 65 20 47 4d 20 52 61 74 78 20 6f 72 20 41 44 4d 20 43 69 6b 6c 6f 6e 2e b4 18 2d 00 59 6f 75 72 20 6c 61 73 74 20 76 69 73 69 74 20 69 6e 20 52 50 47 3a 20 32 31 20 4a 75 6e 20 32 30 32 34 20 31 35 3a 33 36 3a 35 34 2e 8d 03 00 00 10 ff d7 a2 00 00

how to find where there error specifcally is in sources? how to read this packets? i can't remember how to

thanks in advance