System.Web.Abstractions missing on a ASP.NET web site
I recently re-enabled feature on a ASP.NET site. This feature (a set of pages) had been running OK about six months ago for an initial pilot project but was disabled until now until a decision was made to develop the feature fully. In intervening time the web site had other modification and had been rebuilt (it was targeted at .NET 3.5) without issue. When I re-enabled the feature (renamed a .ASPX file) I got the error ...