using the release 2013.1.220.45, we experienced this in two different environments and wondering if anyone else did.
Windows 8 / Visual Studio 2012 Ultimate on traditional laptop
Windows 7 Enterprise / Visual Studio 2012 Professional in a VM
In both environments - different machines this would crash visual studio every time for us:
Any project - existing or brand new empty, webform projects.
Select radgrid in design view, right click scroll and choose properties
In the properties explorer, scroll down to MasterTableView and click the plus sign to the left of it -Visual Studio Crashes
The dumps from each machine had different errors, but both consistently blew up Visual Studio. Didn't keep the dump files as we were too pressed to get returned to operational status. We had to uninstall and then re-install rolled back to 2012.3 1480 jan 8 and everything works fine.
Anyone else experience this?

<telerik:RadGrid ID="policeGrid" runat="server" AllowSorting="false" Skin="Default" OnNeedDataSource="LoadPoliceTable" OnItemCommand="policeGrid_ItemCommand" GridLines="Both" AutoGenerateColumns="False" ShowFooter="false" AllowPaging="true" AllowFilteringByColumn="true" PageSize="25" PagerStyle-AlwaysVisible="true" OnUpdateCommand="policeGrid_UpdateCommand" OnInsertCommand="policeGrid_InsertCommand" EnableLinqExpressions="false" OnDeleteCommand="policeGrid_DeleteCommand" GroupingEnabled="True" ShowGroupPanel="True" OnItemDataBound="policeGrid_ItemDataBound" GroupPanel-Enabled="True"> <ClientSettings AllowDragToGroup="True"/> <PagerStyle Mode="NextPrevNumericAndAdvanced" Position="TopAndBottom" /> <MasterTableView AllowMultiColumnSorting="true" CommandItemDisplay="Top" DataKeyNames="station_id" NoMasterRecordsText="No current police." TableLayout="Fixed" CommandItemSettings-ShowRefreshButton="False"> <RowIndicatorColumn Visible="False"> <HeaderStyle Width="20px"></HeaderStyle> </RowIndicatorColumn> <Columns> <telerik:GridEditCommandColumn UniqueName="btnEdit" ButtonType="ImageButton" EditText="Edit" Resizable="False" > <ItemStyle HorizontalAlign="Center" CssClass="MyImageButton" /> <HeaderStyle Width="15px" /> </telerik:GridEditCommandColumn> <telerik:GridButtonColumn UniqueName="infoPolice" ButtonType="ImageButton" ImageUrl="../../RadControls/Grid/Skins/info.png" CommandName="Select" Text="Info"> <HeaderStyle Width="15px" /> </telerik:GridButtonColumn> <telerik:GridBoundColumn DataField="STATION_ID" HeaderText="STATION_ID" UniqueName="STATION_ID" AllowFiltering="True" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false" > <HeaderStyle Width="50px" /> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="PRIMARY_CONTACT_ID" HeaderText="PRIMARY_CONTACT_ID" UniqueName="PRIMARY_CONTACT_ID" AllowFiltering="True" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false" > <HeaderStyle Width="50px" /> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="STATE_NAME" HeaderText="STATE_NAME" UniqueName="STATE_NAME" AllowFiltering="True" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false" > <HeaderStyle Width="75px" /> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="TROOP" UniqueName="TROOP" HeaderText="TROOP" AllowFiltering="True" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false"> <HeaderStyle Width="75" /> </telerik:GridBoundColumn> <telerik:GridBoundColumn DataField="PH_HAZMAT" HeaderText="PH_HAZMAT" UniqueName="PH_HAZMAT" AllowFiltering="True" AutoPostBackOnFilter="true" CurrentFilterFunction="Contains" ShowFilterIcon="false"> <HeaderStyle Width="75px" /> </telerik:GridBoundColumn> <telerik:GridButtonColumn ConfirmText="Delete this group?" ConfirmDialogType="RadWindow" ConfirmTitle="Delete" ButtonType="ImageButton" CommandName="Delete" Text="Delete" UniqueName="DeleteColumngroups" Visible="true"> <ItemStyle HorizontalAlign="Center" CssClass="MyImageButton" /> <HeaderStyle Width="50px" /> </telerik:GridButtonColumn> </Columns> <EditFormSettings UserControlName="EditPolice.ascx" EditFormType="WebUserControl"> <EditColumn UniqueName="EditCommandColumn1"> </EditColumn> </EditFormSettings> </MasterTableView> </telerik:RadGrid>protected void policeGrid_ItemCommand(object sender, GridCommandEventArgs e) { if (e.CommandName == "Select") { var stationId = e.Item.OwnerTableView.DataKeyValues[e.Item.ItemIndex]["station_id"]; Session["station_id"] = stationId; } } protected void policeGrid_ItemDataBound(object sender, GridItemEventArgs e) { if (e.Item is GridDataItem) { GridDataItem item = (GridDataItem)e.Item; ImageButton link = (ImageButton)item["infoPolice"].Controls[0]; link.OnClientClick = "Open();return false;"; } }<telerik:RadGrid ID="rgLocations" runat="server" Width="100%" AutoGenerateColumns="false" Skin="Office2010Black" ItemStyle-BackColor="#ffe394" BorderColor="White" ShowFooter="false" OnNeedDataSource="rgLocations_NeedDataSource" OnInsertCommand="rgLocations_InsertCommand"> <AlternatingItemStyle BackColor="White" /> <FooterStyle BackColor="#cccccc" /> <HeaderStyle ForeColor="White" /> <PagerStyle AlwaysVisible="true" Position="TopAndBottom" ForeColor="White" /> <MasterTableView CommandItemDisplay="Top" DataKeyNames="ClientLocationID" > <Columns> <telerik:GridBoundColumn DataField="ClientLocationID" Visible="false" ReadOnly="true"/> <telerik:GridTemplateColumn HeaderText="Edit"> <ItemTemplate> <asp:ImageButton ID="ibtnEdit" ImageUrl="~/images/silk/pencil_go.png" CommandName="Edit" runat="server" /> </ItemTemplate> </telerik:GridTemplateColumn> <telerik:GridBoundColumn DataField="ClientID" HeaderText="Client" Visible="false" ReadOnly="true" /> <telerik:GridBoundColumn DataField="LocationName" HeaderText="Location" EditFormColumnIndex="0" /> <telerik:GridBoundColumn DataField="PublicIPs" HeaderText="Public IPs" EditFormColumnIndex="0"/> <telerik:GridBoundColumn DataField="PrivateIPs" HeaderText="Private IPs" EditFormColumnIndex="0" /> <telerik:GridBoundColumn DataField="Address1" HeaderText="Address1" EditFormColumnIndex="1" /> <telerik:GridBoundColumn DataField="Address2" HeaderText="Address2" EditFormColumnIndex="1" /> <telerik:GridBoundColumn DataField="City" HeaderText="City" EditFormColumnIndex="2" /> <telerik:GridBoundColumn DataField="State" HeaderText="State" EditFormColumnIndex="2" /> <telerik:GridBoundColumn DataField="Zip" HeaderText="Zip" EditFormColumnIndex="2" /> <telerik:GridTemplateColumn ReadOnly="true" HeaderText="Delete" ItemStyle-HorizontalAlign="Center"> <ItemTemplate> <asp:ImageButton ID="ibtnDelete" CommandName="Delete" runat="server" ImageUrl="images/1263447248_cross.png" /> </ItemTemplate> </telerik:GridTemplateColumn> </Columns> <EditFormSettings ColumnNumber="3" CaptionFormatString="Edit details for Notification {0}" CaptionDataField="LocationName"> <FormTableItemStyle Wrap="False"></FormTableItemStyle> <FormMainTableStyle GridLines="None" CellSpacing="0" CellPadding="5" Width="200" /> <FormTableStyle GridLines="Horizontal" CellSpacing="0" CellPadding="5" CssClass="module" Height="110px" Width="100%"></FormTableStyle> <FormStyle Width="100%" BackColor="#eef2ea"></FormStyle> </EditFormSettings> </MasterTableView> </telerik:RadGrid>Protected Sub rgLocations_NeedDataSource(sender As Object, e As Telerik.Web.UI.GridNeedDataSourceEventArgs) Dim ClientID As String = Session("ClientID") Dim oCLientLocations As clsClientLocations = New clsClientLocations(ClientID) rgLocations.DataSource = oCLientLocations.DataTableEnd SubProtected Sub rgLocations_InsertCommand(sender As Object, e As Telerik.Web.UI.GridCommandEventArgs) Dim editedItem As GridEditFormItem = CType(e.Item, GridEditableItem) Dim LocationName As String = CType(editedItem("LocationName").FindControl(0), TextBox).TextEnd Sub