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This is really strange ! After upgrading the lightswitch engine with Update 1, I'm suddenly unable to navigate forward to another screen (using myapp.showSomeScreen() ) from my home screen. Then, when I try to navigate back (using native previous arrow), I get the following error: TypeError: Unable to get property 'unit' of undefined or null reference    at wu (http://localhost:19952/HTMLClient/Scripts/msls-1.0.1.min.js:5:230291)    at au (http://localhost:19952/HTMLClient/Scripts/msls-1.0.1.min.js:5:121782)    at Anonymous function (http://localhost:19952/HTMLClient/Scripts/msls-1.0.1.min.js:5:121648)    at each (http://localhost:19952/HTMLClient/Scripts/jquery-1.9.1.min.js:3:5250)   

I am following the Working with Data in LightSwitch (Guided Tour) at http://msdn.microsoft.com/en-us/library/ff851982.aspx, and at the "Connecting to Data" portion I am unable to choose "OData Service" in the Attach Data Source wizard. It just doesn't appear. See attached. What do need I to do to get "OData Service" to appear, so I can choose it? Thank you! - tom

I would like to open HTML client screen from Silverlight client.

In the Silverlight client we had the Auto Complete Box that you could bind to either a Query or a Choice List based property. In the current HTML client we have the Drop Down control that you can bind to a Choice List based property only from what I can see. Questions: 1/ Can we bind a Drop Down control to a Query? 2/ Can we dynamically populate a Choice List in Javascript at run-time (this was not possible in the Silverlight client)? If neither of the above are possible, what is the recommended way to have Drop Downs that are based on a query or dynamic data? Thanks in advance Regards, Xander

Thanks for help on this, Looking at moving from Access and I'm impressed with the deployment possibilities of LS along with the RAD focus (great name too - Lightswitch). Struggling with something that I'm sure is simple but I'm missing - how do I add a column/field to a query or a datagrid from a related table in LS.  I've tried adding a Data Item in a screen, bit I can't add a field to the grid, and there doesn't seem to be any options to add fields in the query builder. What am I missing folks? Brad