Zap! 1541 Error Encoder v2.0 by Centsible Software was released in 1984.  With this software you can analyze a disk for errors or as the name implies you can encode an error onto a disk for a form of copy protection.  Although the program shows two copiers and all the files are there, neither the single or double disk copiers seem to work.  Everything else works ok.  If you have a fully working version of this please let me know.