I get this error after manually placing installation path:
ARCFile.ReadARCToC() - Error reading arcfile
System.IO.FileNotFoundException: Could not find file 'D:\Program Files (x86)\Titan Quest - Anniversary Edition\Resources\XPACK3.arc'.
File name: 'D:\Program Files (x86)\Titan Quest - Anniversary Edition\Resources\XPACK3.arc'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access)
at TQ_weaponsmith.ArcFile.ReadARCToC()
I check the location n sub folders, there is an xpack3 folder but no xpack3.arc