Tried 2 Games. Dead By Daylight and Last Year. The Nightmare.
Previous version of umodel was able to open skeletal meshes.
******** Loading object SkeletalMesh4'KK_Body01_REF.KK_Body01_REF' ********
ERROR: Package "/Game/Characters/Slashers/Kenya/Models/Bodies/KK_Body01_REF.uasset": wrong name index 1125834973
UnPackage::SerializeFName:pos=00001F6D <- FSkeletalMaterial<< <- TArray::Serialize:2/4 <- USkeletalMesh4::Serialize <- LoadObject:SkeletalMesh4'KK_Body01_REF.KK_Body01_REF', pos=1F6D, ver=516/0 (unversioned), game=ue4.20 <- UObject::EndLoad <- CUmodelApp::ShowPackageUI <- Main:umodel_build=974
******** Loading object SkeletalMesh4'DO_Body01.DO_Body01' ********
ERROR: Package "/Game/Characters/Slashers/Doctor/Models/Bodies/DO_Body01.uasset": wrong name index 1126835995
UnPackage::SerializeFName:pos=0008BD3E <- FSkeletalMaterial<< <- TArray::Serialize:2/3 <- USkeletalMesh4::Serialize <- LoadObject:SkeletalMesh4'DO_Body01.DO_Body01', pos=8BD3E, ver=517/0 (unversioned), game=ue4.21 <- UObject::EndLoad <- CUmodelApp::ShowPackageUI <- Main:umodel_build=974
******** Loading object SkeletalMesh4'SK_Giant.SK_Giant' ********
ERROR: Package "/Game/Characters/Giant/SK_Giant.uasset": wrong name index 1084050537
UnPackage::SerializeFName:pos=0004252B <- FSkeletalMaterial<< <- TArray::Serialize:2/5 <- USkeletalMesh4::Serialize <- LoadObject:SkeletalMesh4'SK_Giant.SK_Giant', pos=4252B, ver=517/0 (unversioned), game=ue4.21 <- UObject::EndLoad <- CUmodelApp::ShowPackageUI <- Main:umodel_build=974
******** Loading object SkeletalMesh4'SK_Strangler.SK_Strangler' ********
ERROR: Package "/Game/Characters/Strangler/SK_Strangler.uasset": wrong name index 1110671792
UnPackage::SerializeFName:pos=000021BE <- FSkeletalMaterial<< <- TArray::Serialize:2/5 <- USkeletalMesh4::Serialize <- LoadObject:SkeletalMesh4'SK_Strangler.SK_Strangler', pos=21BE, ver=516/0 (unversioned), game=ue4.20 <- UObject::EndLoad <- CUmodelApp::ShowPackageUI <- Main:umodel_build=974
******** Loading object SkeletalMesh4'SK_Slasher.SK_Slasher' ********
ERROR: Package "/Game/Characters/Slasher/SK_Slasher.uasset": wrong name index 1101205205
UnPackage::SerializeFName:pos=00002100 <- FSkeletalMaterial<< <- TArray::Serialize:2/5 <- USkeletalMesh4::Serialize <- LoadObject:SkeletalMesh4'SK_Slasher.SK_Slasher', pos=2100, ver=516/0 (unversioned), game=ue4.19 <- UObject::EndLoad <- CUmodelApp::ShowPackageUI <- Main:umodel_build=974