Server.HTMLEncode null value problem

On one of the machines where I deployed an application, creating an instance of the editor with a null value caused a type mismatch error. I modified line 97 of fckeditor.asp from:

Server.HTMLEncode( sValue )

to

Server.HTMLEncode( sValue & "" )

This corrected the problem. I don't know if it is the best way to fix that problem, though.