There is no SkyShards Guts.txt in the Skyshards folder.
Skyshards brings some chat command with it. So you could try to use this one and see if some info is shown/written to the chat tabs for you:
Simply enter this into the chat and press return key
If nothing happens the Skyshards addon is not running as it seems.
Do you use addons that remove the error message popups and put the error messae into the chat (like BugEater)?
Do you get any error messages in the chat as the game loads, telling you that there is an error with the addon?
Or a popup telling you this?