Hi, I know it may be hard to see what's going on but, I'm trying to load a lisp file into Maxima compiled with ABCL, and I get the error shown below: The assertion (<= -32768 JVM::OFFSET 32767) failed. I've also included a stack trace if that helps. I can supply more info if you tell me what to look for. Thanks so much for your help, Robert Dodier PS. This is in a Maxima session after compiling and launching Maxima. (%i1) :lisp (load "../share/odepack/load-dlsode.lisp") ; (IN-PACKAGE "ODEPACK") ; (LET (# # ...) ...) Error loading /Users/dodier/tmp/maxima-code/share/odepack/load-dlsode.lisp at line 25 (offset 770) #<THREAD "interpreter" {19E01A93}>: Debugger invoked on condition of type SIMPLE-ERROR The assertion (<= -32768 JVM::OFFSET 32767) failed. Restarts: 0: CONTINUE Retry assertion. 1: MACSYMA-QUIT Maxima top-level 2: TOP-LEVEL Return to top level. [1] ODEPACK(5): :bt 0: (SYSTEM:BACKTRACE) 1: (INVOKE-DEBUGGER #<SIMPLE-ERROR {6789AA04}>) 2: (ERROR #<SIMPLE-ERROR {6789AA04}>) 3: (SYSTEM::ASSERT-ERROR (<= -32768 JVM::OFFSET 32767) NIL NIL) 4: (JVM::CODE-BYTES #<(VECTOR T 18397) {4783535E}>) 5: (JVM::FINALIZE-CODE-ATTRIBUTE #<JVM::CODE-ATTRIBUTE {43CBA720}> NIL #<JVM::ABCL-CLASS-FILE {67BB799A}>) 6: (JVM::FINALIZE-ATTRIBUTES (#<JVM::CODE-ATTRIBUTE {43CBA720}>) NIL #<JVM::ABCL-CLASS-FILE {67BB799A}>) 7: (JVM::FINALIZE-METHOD #<JVM::JVM-METHOD {72946D27}> #<JVM::ABCL-CLASS-FILE {67BB799A}>)