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Fix: V4.master Recurring Meeting Workspace Error: ‘g_InstanceID’ is Undefined

February 8, 2011

In SharePoint 2007 a problem with JavaScript occurred when you used a recurring meeting workspace. When you clicked on the hyperlinks under “Select a date from the list below” a JavaScript error was thrown.

Michmon found a solution for this problem and he made a blog post on MSDN about it.

Now in the SharePoint 2010 days, this problem has been resolved in the “MWSDefaultv4.master” master page. This is the standard master page that is used for meeting workspaces. When you want to make use of the “v4.master” like I did, the same problem occurs as in SharePoint 2007.

g_InstanceID JavaScript Error
g_InstanceID JavaScript Error


The solution is still the same, only the version number has changed.

  • Add the following line of code to the v4.master page.
<%@ Register Tagprefix="Meetings" Namespace="Microsoft.SharePoint.Meetings" Assembly="Microsoft.SharePoint, Version=, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %>
  • Add the following line of code after the body tag.
<Meetings:PropertyBag runat="server"/>


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