X-Git-Url: http://git.roojs.org/?p=roojs1;a=blobdiff_plain;f=Roo%2Fbootstrap%2Fversion.js;fp=Roo%2Fbootstrap%2Fversion.js;h=555a5ab1a634e23e946aa44db3dab5e593600d1d;hp=7d4b3cb16c9ede40add52d82b17059abacf6e6df;hb=94773a1f11608065e3899524849ff867ac81e7a2;hpb=79bd3d52a193f29a604d9ab5ed12125a7c6b0a5c

diff --git a/Roo/bootstrap/version.js b/Roo/bootstrap/version.js
index 7d4b3cb16c..555a5ab1a6 100644
--- a/Roo/bootstrap/version.js
+++ b/Roo/bootstrap/version.js
@@ -7,7 +7,7 @@ Roo.bootstrap.version = (
         function() {
                 var ret=3;
                 Roo.each(document.styleSheets, function(s) {
-                    if (s.href.match(/css-bootstrap4/)) {
+                    if (typeof(s.href) != 'undefined' && s.href.match(/css-bootstrap4/)) {
                         ret=4;
                     }
                 });