I'm trying to open a model from the DLC but a lot of the models are fighting Umodel at every turn, one in particular won't even partially open it just straight crashes and then gives me this error

Memory: bad allocation size -1275068416 bytes
appMalloc: size=-1275068416 (total=84 Mbytes) <- FArray::Empty: 125829120 x 24 <- TArray::Serialize: 0/0 <- FStaticMeshLODModel4<< <- TArray::Serialize: 1/3 <- UStaticMesh4::Serialize <- LoadObject: StaticMesh4'SM_RoseMansion_Romeo_02.SM_RoseMansion_Romeo_02', pos=124B, ver=522/0 (unversioned), game=ue4.27 <- UObject::EndLoad <- LoadWholePackage: /Game/ArtAsset/CH/PROB/Romeo/SM_RoseMansion_Romeo_02.uasset <- CUmodelApp::ShowPackageUI <- Main: umodel_build=1590

I read somewhere that for negative values you should try 4.25+ but seeing as the game requires 4.27 it doesn't seem to be working haha
Thanks in advance