make sure you have net 2.0 framework installed altough its says its not needed below it might help
also if you used decal before cleaning decal out of your registery might help
Decal (DenAgent.exe) version: 2.9.4.0
type, enabled, name, version, clsid
Plugins, 1, ELTank v2.6.0.20-Beta-6b, 2.6.0.20, {39E9E0F5-85D7-4C38-87D6-3BBCB853357E}
Plugins, 1, Decal Hotkey System, 2.9.4.0, {6B6B9FA8-37DE-4FA3-8C60-52BD6A2F9855}
Plugins, 1, TreeStats 2, 0.1.6.2, {9847B2B7-C7C7-42BA-9361-021D01715E8F}
Plugins, 1, Quest Timer, 2.4.0.2, {BB51962C-2EEE-4E67-A032-EEC1F11E66C8}
Plugins, 1, Trophy Hunter 2, 2.0.0.5, {BD90AFF9-B229-4B4D-A1D3-6A0140FE87EF}
Network Filters, 1, Echo Filter 2, 2.9.4.0, {34239EAD-6317-4C40-A405-193BA5232DD8}
Network Filters, 1, Character Stats Filter, 2.9.4.0, {4540C969-08D1-46BF-97AD-6B19D3C10BEE}
Network Filters, 1, World Object Filter, 2.9.4.0, {53092D1B-F0B0-46FF-BF11-8F031EC9B137}
Network Filters, 1, Decal FileService, 2.9.4.0, {5E9B2FC3-C251-4589-8CE3-2BCA542B98B6}
Network Filters, 1, Identify Queue Filter, 2.9.4.0, {B0C05A9A-273D-4BC4-B7BA-E27CF94C8EF4}
Network Filters, 1, SpellFilter, 2.9.4.0, {C2D43735-BE7E-4829-AF73-F2E7E820EB16}
Services, 1, Decal .NET Lifetime Service, 2.9.4.0, {71A69713-6593-47EC-0001-0000000DECA1}
Services, 1, Decal Dat Service, 2.9.4.0, {37B083F0-276E-43AD-8D26-3F7449B519DC}
Services, 1, Decal Render Service, 2.9.4.0, {FB3C8286-88ED-4B4D-B413-94B40F346239}
Services, 1, Decal Inject Gateway Service, 2.9.4.0, {FEFE5CAB-10E4-404F-AD4D-184BCB506099}
Services, 1, Decal Input Service, 2.9.4.0, {B33307BA-706D-474A-80B9-70BB8D13EF3E}
Services, 1, Decal Networking Service, 2.9.4.0, {C8C406F8-BA2E-4964-8B04-FF38394A8E0E}
Surrogates, 1, Decal.Adapter Surrogate, 2.9.4.0, {71A69713-6593-47EC-0002-0000000DECA1}
Surrogates, 1, Prefilter Network Filter Surrogate, 2.9.4.0, {443D4A68-5422-4E0C-9460-973F8FBDB190}
Surrogates, 1, ActiveX Plugin Surrogate, 2.9.4.0, {7559F22F-C56F-4621-AE08-9C354D799D4B}
Surrogates, -1, Version 1 Plugin Surrogate, 2.9.4.0, {3D837F6E-B5CA-4604-885F-7AB45FCFA62A}
Input Actions, 1, Delay Input Action, 2.9.4.0, {324D76B8-D8C7-4A81-B867-E4E1F874E488}
Input Actions, 1, Mouse Move Input Action, 2.9.4.0, {57D18578-0BF0-4DE5-A0A9-E7CB531C0429}
Input Actions, 1, Restore Input Action, 2.9.4.0, {6EE2F682-7129-44BE-84B9-787BAE35EC1C}
Input Actions, 1, Polled Delay Input Action, 2.9.4.0, {762335B2-2274-4BB4-8B1F-F7286C949FF7}
Input Actions, 1, Typing Input Action, 2.9.4.0, {9CDCEEDC-F8AC-42D5-9A05-52B9346D00A4}
Input Actions, 1, Event Input Action, 2.9.4.0, {D6E4BD19-4900-4515-BCE2-A9EA4AAE2699}
Operating System:
Microsoft Windows XP Professional Service Pack 2 (Build 2600)
[Protected Storage Service] : Automatic
Decal Settings
: Timer (Default)
[Portal Path] : E:\asheron call\
[Launcher App] : acclient.exe
:
http://update.decaldev.com
[memlocs.xml] : 24328 bytes, Version 0.0.11.2646
[messages.xml] : 52004 bytes, Version 2006.01.01.1
[Video Memory] : 258465792
D3DX Libraries (Only d3dx9_27 is required)
[d3dx9_24.dll] : Installed (9.5.132.0)
[d3dx9_25.dll] : Installed (9.6.168.0)
[d3dx9_26.dll] : Installed (9.7.239.0)
[d3dx9_27.dll] : Installed (9.8.299.0)
---Support Libraries ---
Note: The following libraries are not necessary for Decal to function and are only provided to be of use to plugin developers.
.NET Frameworks
[v1.0.3705] (1.0 Final) : Not Installed
[v1.1.4322] (1.1 Final) : Installed (Service Pack 1)
[v2.0.50215] (2.0 Beta 2) : Not Installed
[v2.0.50727] (2.0 Final) : Installed
C++ Libraries
[msvbvm60.dll] : Installed (6.0.97.82)
[atl70.dll] : Not Installed
[mfc70.dll] : Not Installed
[msvcr70.dll] : Installed (7.0.9466.0)
[msvcp70.dll] : Installed (7.0.9466.0)
[atl71.dll] : Installed (7.10.3077.0)
[mfc71.dll] : Not Installed
[msvcr71.dll] : Installed (7.10.3052.4)
[msvcp71.dll] : Installed (7.10.3077.0)
Microsoft XML Libraries
[msxml3.dll] : Installed (8.70.1104.0)
[msxml4.dll] : Installed (4.20.9821.0)