Getting this JS Assert Error in Google Chrome

Question

"MuseJSAssert: Error calling selector function:TypeError: Object #<Object> has no method 'toBrowserWidth'"
I am also seeing sometimes when I preview a page on my Mac. If I try a second time, it goes away.

Answer 1

Elaine, the way I solved the problem was to start up the localhost web service. It's simple on either OS X or Win8. Once you've started the local web server, you can just put your files into the web directory and browse them from Chrome or any other browser without the errors you are getting. In fact, Muse runs a virtual web server as part of its preview function. If you can preview within Muse and not get any errors, then hosting on your own local testing server will work just fine. The errors have nothing to do with Muse, they are related to security issues with the browser not liking HTML that isn't served up by a proper web host (like when you are browsing "file://..." instead of "http://..." )
For Windows, search for Microsoft IIS server. It's a free download from Microsoft, and installs easily.
For OS X, follow these steps to start the built in Apache web server (there are some extra steps here that might be useful - just search the web for "starting Apache on OS X Mavericks":
OS X comes with Apache already installed, so it’s as simple as starting up the server.  Previously, you could start this using the System Preferences > Sharing panel, but it has been removed from there in 10.9.  To start the server, first start up Terminal app via Utilities > Terminal, and then enter the command below.
Start Apache:
$ sudo apachectl start
Stop Apache:
$ sudo apachectl stop
Restart Apache:
$ sudo apachectl restart
Another useful command is to verify your httpd.conf configuration via the -t test switch.
$ sudo apachectl -t
Once you have started the Apache server, open your favorite browser to: http://localhost
After getting the initial localhost working, you may want to make some changes.  I suggest:
Create a /www directory
Put all your web sites in this directory
Add virtual hosts for each web site you are working on
Add an entry to your hosts file to point a local domain name to your local Apache server
First, let’s create the /www directory:
$ cd /$ mkdir www
Second, let’s create our local web site local.example.com (replace with your own web site):
$ mkdir local.example.com
Open up the httpd.conf file located in /private/etc/acpache2.  I am using TextMate, so I will use the “mate” command.
$ mate /private/etc/apache2/httpd.conf
Make the following changes to the httdp.conf file.
On line 170, change the DocumentRoot:
DocumentRoot “/www”
On line 197, change the Directory location:
<Directory “/www”>
On line 217 (within the Directory location we just updated), change the AllowOverride to “All” so that we can use .htaccess to modify any settings for our local sites:
AllowOverride All
On line 429, uncomment the Include of the httpd-vhosts.conf file:
Include /private/etc/apache2/extra/httpd-vhosts.conf