I am using microsoft web expression 4. Haven't had any problems using htis program for several years. I recently made changes to my project.dwt file which i have done many times before, however all the files won't update. All the files will update, with the exception of products.asp, categories.asp, and cart.asp. Those three files come back with an error stating that the operation has failed, and under the publishing tab, it says "The process cannot access the file because it is being used by another process(550).". I would really appreciate some help with this problem.