Not able to add the Object in Load Profile

Hello,
I am trying to add the Object in the load profile, but after 11 objects added to the load profile, it is not allowing me to add any 12th object. by default, there are 6 objects in the Load profile. also, there is no logic in restricting the number of objects that can be added.

Here is the log of the 11th Object added:
---------------------------------------------------------------------------
GXDLMSDirector 8.2.2011.1101
Log created 10:42:24
10:42:35 Writing object 1.0.99.1.0.255, interface ProfileGeneric
7E A8 89 03 C9 78 87 A6 E6 E6 00 C9 81 E6 30 00 00 02 81 AD 39 8A 62 90 CC C7 77 68 21 E5 C6 F7 CF 94 5A AD 96 A9 96 65 B1 92 47 9A 45 88 10 12 9E 2D E3 CD 86 3A BA DA 1C DB 18 AC 08 65 B5 9E 70 55 A7 77 C9 2A 96 6E 53 98 52 4F C0 7F 11 F6 ED 81 C9 AD 65 47 6C 25 4B B7 87 89 A7 BF EA 0F 37 09 4C 6A D9 2F 69 E4 CB E5 F8 87 E2 5F 88 42 DF 98 C3 4B 92 49 84 47 F7 B6 7A 4A 0B 2C BC AC A2 39 10 D6 54 BD 53 B6 20 65 7E
10:42:35
7E A0 07 C9 03 B1 7C 6A 7E
10:42:35 Writing object 1.0.99.1.0.255, interface ProfileGeneric
7E A0 75 03 C9 7A AA 3F D8 74 72 E6 74 4E 7E C3 C3 5B 87 8A 2B 4F C8 8B 66 BE 0A 58 3F 30 16 C3 A7 A8 27 2A 30 C8 1B 5A 4A 55 80 31 57 CF 6D 19 7E 5B 0E B7 43 3F 35 F1 32 22 C8 C4 D2 D1 78 8D 35 72 0D 88 96 88 91 16 54 F5 F9 3C 70 91 36 AB 3D 74 9B F6 2E 9B 46 C5 56 CF 00 B2 21 E3 84 27 7E 83 1F 21 30 47 AD A0 47 3E 51 90 47 DE 63 52 FA 37 5B A7 8D A7 7E
10:42:35
7E A0 23 C9 03 D6 7A 80 E6 E7 00 CD 15 30 00 00 02 80 E8 39 90 5A 58 84 9F D4 DF 5A 6B 71 49 ED 74 AD D8 BE 7E
10:42:35 Reading object 1.0.99.1.0.255, interface ProfileGeneric
7E A0 2C 03 C9 9C E7 91 E6 E6 00 C8 1E 30 00 00 02 82 4E 19 FA B2 98 78 A4 35 23 72 06 41 EA 46 CD 21 35 C0 BF 70 73 8F F8 E9 0D D6 F8 7E
10:42:36
7E A8 89 C9 03 F8 B5 6C E6 E7 00 CC 81 DD 30 00 00 02 81 A8 39 8A 62 96 C6 C5 10 7B 21 12 CC F1 CE 9F 59 A9 84 56 91 6E A5 92 47 99 41 9A EF 1C 95 39 E3 CD E4 34 A9 25 12 D0 0C AC 08 07 BB 8D 8F 59 AC 63 C8 2A 81 62 41 67 5E 44 D4 7E 11 E1 E1 93 36 A1 6E 53 6D 25 60 BB 95 76 AB B4 FE 0E 37 22 40 78 26 23 62 F0 CA E5 C7 8B F0 A0 84 49 CB 99 C3 74 9E 5B 7B 4B FC A2 7B 4A 08 20 AE 53 AE 32 04 D7 54 BE 5F A4 B7 F7 7E
10:42:36 Get next frame.
10:42:36 Reading object 1.0.99.1.0.255, interface ProfileGeneric
7E A0 07 03 C9 B1 46 24 7E
10:42:36
7E A0 6C C9 03 FA 5A CF 27 78 79 F2 75 4E 56 CF D1 A4 8B 81 3F 4E C8 A3 6A AC F5 54 34 24 17 C3 9B A4 35 D5 3C C3 0F 5B 4A 55 8C 23 A8 C3 66 0D 7F 5B 0E BB 51 C0 39 FA 26 23 C8 C5 DE C3 87 81 3E 66 0C 88 97 84 83 E9 58 FE ED 3D 70 97 3A B9 C2 78 90 E2 2F 9B 40 C9 44 30 0C B9 35 E2 84 30 A8 66 E4 79 2E E6 41 FD FC B7 F5 8D D1 7E

Here is the log of the 12th Object added:
---------------------------------------------------------------------------------
GXDLMSDirector 8.2.2011.1101
Log created 10:31:00
10:31:13 Writing object 1.0.99.1.0.255, interface ProfileGeneric
7E A8 89 03 C9 BA 99 43 E6 E6 00 C9 81 F8 30 00 00 02 5C B8 16 B2 09 4B 30 49 2F 01 21 DB BD F3 B2 D0 E8 9B 8D D6 D8 C3 A0 99 BD D7 A3 6E 46 28 6F C3 91 D4 C7 19 12 68 CB A0 92 90 8D 66 CF 2F 68 63 6A DF 91 B7 B2 7E A0 2D 37 E0 15 91 41 F3 5E 60 29 95 CC 22 C5 4D 53 91 CA EA A6 A1 C2 E9 7D 4B 62 05 DF E8 3E 00 F1 97 44 28 74 EE D4 36 DB FF 00 AD 42 9B FF C2 F8 76 E2 E8 85 CF D2 FB 0E 1F 14 A0 18 44 0E ED 2B F4 7E
10:31:13
7E A0 07 C9 03 D1 7A 09 7E
10:31:13 Writing object 1.0.99.1.0.255, interface ProfileGeneric
7E A0 85 03 C9 BC BB EB AE 8D 6B CA D3 B3 22 77 D7 79 C8 F0 7D 4D F6 95 E0 08 FF E0 33 3D 4B 56 35 6C A1 3E CC EF FC F3 54 C7 3A 71 21 1C BB 94 80 09 15 3C FB BF F0 78 AA 41 E6 75 AE 67 E0 AC 9F 40 12 6F 9C 11 32 05 6C 89 07 59 7E C4 8E DF 5C A9 BE 62 F7 1C 0B B0 82 F0 89 4D 9F 76 49 15 85 57 C5 AD 86 14 64 5B C2 65 EA 03 69 02 A5 6D 15 27 B5 90 FC 8F 69 A3 CC 93 6B EA 5D C6 1F D9 CD 97 AE 20 39 1C 7E
10:31:14
7E A0 23 C9 03 FA 14 6B E6 E7 00 CD 15 30 00 00 02 5B D1 0B 86 EE 39 AF A9 A3 7D 6B 3F 80 9D EB 1B 43 56 49 7E
10:31:14 Writing object 1.0.99.1.0.255, interface ProfileGeneric
7E A0 24 03 C9 DE 29 15 E6 E6 00 C9 16 30 00 00 02 5D 88 D7 F7 A2 65 F0 CA 92 C6 6F B6 DA F6 DC FD EA 3F FA 49 7E
10:31:14
7E A0 23 C9 03 1C 2C E9 E6 E7 00 CD 15 30 00 00 02 5C BC 16 B2 0D 43 4B A9 98 9B D1 4D A8 60 B8 D7 80 4A 70 7E
Gurux.DLMS.GXDLMSException: Access Error : Device reports a undefined object.
at GXDLMSDirector.GXDLMSCommunicator.Write(GXDLMSObject obj, Int32 index)
at GXDLMSDirector.MainForm.WriteMnu_Click(Object sender, EventArgs e)

Here the thing is, the same object is added as the 11th object and added successfully, but if it is added as the 12th object, the error is coming: "Access Error: Device reports an undefined object."