Continual crashes - mostly loading issues

Fatal error: [File:C:\b\nwx\UE4\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp] [Line: 4896] FMaterialResourceProxyReader: deserialized an invalid FName, NameIdx=16592897, Names.Num()=68 (Offset=46663, InnerArchive.Tell()=50081, OffsetToFirstResource=3418)

This is the latest error report when game crashed trying to travel a portal. I get a mix of errors but mostly ones related to memory addresses being invalid. The file path this one points to does not even exist on my system.