diff --git a/copyparty/web/browser.js b/copyparty/web/browser.js
index f997199e..131588cc 100644
--- a/copyparty/web/browser.js
+++ b/copyparty/web/browser.js
@@ -2580,7 +2580,8 @@ var thegrid = (function () {
 		ebi('bdoc').style.display = 'none';
 		clmod(ebi('wrap'), 'doc');
 		qsr('#docname');
-		treectl.textmode(false);
+		if (window['treectl'])
+			treectl.textmode(false);
 	};
 
 	r.setdirty = function () {
diff --git a/copyparty/web/util.js b/copyparty/web/util.js
index 097b8bfd..be0f5d7d 100644
--- a/copyparty/web/util.js
+++ b/copyparty/web/util.js
@@ -172,7 +172,6 @@ function vis_exh(msg, url, lineNo, columnNo, error) {
     catch (e) {
         document.body.innerHTML = html.join('\n');
     }
-    throw 'fatal_err';
 }
 function ignex(all) {
     var o = ebi('exbox');