Thank you for feedback and using NTextCat.
I have posted new release of NTextCat 0.1.5. It contains four editions: Basic (.Net 4.0), Full (.Net 4.0) and
Basic (.Net 3.5 Client Profile), Full (.Net 3.5 Client Profile).
It is always good to keep your application up to date and use latest stable versions of software/frameworks
(e.g. .Net Framework 4.0).
However sometimes it is not possible. One additional reason to have .Net Framework 3.5 version of NTextCat available is
SQL Server 2008.
SQL Server 2008 allows you to execute .Net code inside of SQL Server's CLR but current latest version of CLR supported is 3.5.
I hope I will manage to implement CLR-SQL stored procedure soon so that people could use NTextCat in their databases right out-of-box.
Please could you post results of your trials whether new release works in your environment?
Good luck with your ASP.NET webapp!