KF start up error

[derp dog]

I am going to keep this short and brief, i have been having trouble with starting KF. I need help with this, I've tried deleting KF and re-installing it but it still shows this same error:

Build UT2004_Build_[2004-11-11_10.48]

OS: Windows NT 6.1 (Build: 7601)
CPU: GenuineIntel PentiumPro-class processor @ 2794 MHz with 4095MB RAM
Video: NVIDIA GeForce G210 (9619)

Assertion failed: Import.ClassName==NAME_Package [File:.\UnLinker.cpp] [Line: 528]

History: ULinkerLoad::VerifyImport <- ValidateImports <- ULinkerLoad::Verify <- ULinkerLoad::ULinkerLoad <- UObject::GetPackageLinker <- ULinkerLoad::VerifyImport <- ValidateImports <- ULinkerLoad::Verify <- ULinkerLoad::ULinkerLoad <- UObject::GetPackageLinker <- ULinkerLoad::VerifyImport <- ValidateImports <- ULinkerLoad::Verify <- ULinkerLoad::ULinkerLoad <- UObject::GetPackageLinker <- UObject::StaticLoadObject <- (Engine.LevelSummary VM-WestLondon.LevelSummary NULL) <- UCacheManager::ExportCacheMaps <- NewMaps <- UCacheManager::SaveNewPackages <- UCacheManager::InitCache <- UCacheManager::execInitCache <- (KFGUIController Package.KFGUIController @ Function XInterface.GUIController.InitializeController : 01BB) <- UObject::execClassContext <- (KFGUIController Package.KFGUIController @ Function XInterface.GUIController.InitializeController : 01BB) <- UObject:rocessEvent <- (KFGUIController Package.KFGUIController, Function KFGUI.KFGUIController.InitializeController) <- UGameEngine::Init <- InitEngine <- FMallocWindows::Free <- FMallocWindows::Realloc <- 006C0590 0 FArray <- FArray::Realloc <- 0*2 <- FMallocWindows::Free <- FMallocWindows::Free