Here is a weird one.

One application is a desktop application. It contains a Linq class. In it, all Linq related objects are intellisense ready. The other application is a Web application, it contains the same Linq class. In it, one Linq object cannot react to intellisense. I have been trying to figure out the factor but was not able to. I checked the References. In both projects, the related DLL are referenced. All the checkboxes under the list of reference DLLs are the same.

Anyone would have any idea whereelse I could look as to know what could cause one Linq object to not be intellisense in the Web application?