What's the error message?
******** UC__MarvelPlayer_Colossus_SF.upk: Texture2D'colossus_spec' ********
ERROR: assertion failed: Pos == ArPos
FFileArchive::Seek:File=CharTextures.tfc, pos=-1 <- FByteBulkData::SerializeChunk <- UTexture2D::LoadBulkTexture:File=CharTextures.tfc <- UTexture2D::GetTextureData <- Upload2D <- UTexture2D::Bind <- UUnrealMaterial::SetMaterial:colossus_spec <- CUmodelApp::Draw3D <- Display <- VisualizerLoop <- MainLoop <- Main
******** UC__MarvelPlayer_Colossus_SF.upk: Texture2D'colossus_spec' ********
ERROR: assertion failed: Pos == ArPos
FFileArchive::Seek:File=CharTextures.tfc, pos=-1 <- FByteBulkData::SerializeChunk <- UTexture2D::LoadBulkTexture:File=CharTextures.tfc <- UTexture2D::GetTextureData <- Upload2D <- UTexture2D::Bind <- UUnrealMaterial::SetMaterial:colossus_spec <- CUmodelApp::Draw3D <- Display <- VisualizerLoop <- MainLoop <- Main
******** UC__MarvelPlayer_DeadPool_SF.upk: Texture2D'deadpool_speccolor' ********
ERROR: assertion failed: Pos == ArPos
FFileArchive::Seek:File=CharTextures.tfc, pos=-1 <- FByteBulkData::SerializeChunk <- UTexture2D::LoadBulkTexture:File=CharTextures.tfc <- UTexture2D::GetTextureData <- Upload2D <- UTexture2D::Bind <- UUnrealMaterial::SetMaterial:deadpool_speccolor <- CUmodelApp::Draw3D <- Display <- VisualizerLoop <- MainLoop <- Main