Thank you for the sent snapshot of the reported problem. However, I’m having difficulties to understand what the error message tries to say. I suspect that the problem is related database; SQL Server; or LINQ.

Could you please kindly resend a snapshot using EN-US culture and provide the following information so that I can assist you better.

• The version of WebUI Studio (is it WebUI Studio 2011 R2 SP1 or the older version?)
• The sample file name that you tried to run.
• Microsoft Visual Studio version installed (is it VS 2010; or VS 2008; or VS 2005?)
• Step-by-step guide when open the demo (for example: which link is clicked, etc) that we can use to observe the problematic behavior.

Thank you and have a nice day.

Edited on: February 23, 2012 2:43 AM
Reason: Update solution

Sxiang has sent me a screenshot which shows that the reported problem happen when he/she tried to run ClientBinding_BatchUpdate.aspx sample. He/She uses Visual Studio 2005 and SQL Server 2008 on Windows 7.

The “Bug Tracker” sample utilizes LINQ feature.

LINQ is a Microsoft .NET Framework component that adds native data querying capabilities to .NET languages. It was released as a part of .NET Framework 3.5 on November 19, 2007.

Visual Studio 2005 which is installed on your development PC comes with .NET Framework 2.0. Please try install Microsoft Visual Studio 2008 or 2010 and let us know whether this helps or not.