In addition to the above, the top line in the dynamics.set represents the number of products installed - you'll also need to decrease that number by 1. You also should remove the three lines in the bottom that point to the product's main dictionary file, reports dictionary, and forms dictionary. The products are listed in the same order as they are in the top section of the file - if that product is the last one listed before the line pointing to the DYNAMICS.DIC file, you would remove the last three lines of the set file. You can then delete the products main dictionary file, reports and forms files if they exist.