I've been looking at this without identifying the cause of the problem. Any ideas from the folks on the list would be appreciated. This is running Gambit v4.6.7 on a 64-bit Mint Linux machine. Steve === steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $ ./run-clojure-repl *** ERROR IN "src/clojure-repl.scm"@3.1 -- Can't open file "/home/steve/Desktop/clojure-scheme/samples/repl/src/../scm/cljscm/source-at.scm" === steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $ cat run-clojure-repl #!/usr/bin/env sh gsc -e "(include \"src/clojure-repl.scm\")" - steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $ which gsc /usr/bin/gsc steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $ ls project.clj run-clojure-repl src steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $ ls -al src total 20 drwxr-xr-x 2 steve steve 4096 Jun 13 16:37 . drwxr-xr-x 3 steve steve 4096 Jul 19 10:49 .. -rw-r--r-- 1 steve steve 1014 Jun 13 16:37 build.clj -rw-r--r-- 1 steve steve 7235 Jun 13 16:37 clojure-repl.scm steve@steve-Satellite-L555D ~/Desktop/clojure-scheme/samples/repl $