Red and question marks in Autorun item

In Autoruns, I found item in the list highlighted in red. Upon examining, it led me to the following registry entry, see attachment.
I’m puzzled as to why there’s question mark in the beginning of the file location in the registry, as well as why it’s red in Autoruns (could the question marks be are the cause of the red?).
Would anyone know? Thank you.

Hi ehmen. Autoruns Forum might be a better place to ask.

http://forum.sysinternals.com/forum16.html

The Windows API has many functions that also have Unicode versions to permit an extended-length path for a maximum total path length of 32,767 characters. This type of path is composed of components separated by backslashes, each up to the value returned in the lpMaximumComponentLength parameter of the GetVolumeInformation function (this value is commonly 255 characters). To specify an extended-length path, use the "\\?\" prefix. For example, "\\?\D:\very long path".
https://msdn.microsoft.com/en-gb/library/windows/desktop/aa365247(v=vs.85).aspx