Updated to match upstream branch

js/content.js

@@ -217,7 +217,12 @@ function getCourseInfo(row) {
 	/*Handle if on the individual course page, ie if the textbook button exists*/
 	if ($("#textbook_button").length) {
 		coursename = $("#details h2").text();
-		profinit = $("table").find("td[data-th='Instructor']").text().split(", ")[1].substring(0, 1);
+		var gotname = $("table").find("td[data-th='Instructor']").text();
+		if (gotname != "") {
+			profinit = $("table").find("td[data-th='Instructor']").text().split(", ")[1].substring(0, 1);
+		} else {
+			profinit = "";
+		}
 		profurl = document.URL;
 		console.log(profurl);
 	}