thanks for replying
[sam@SamHPUMBP:~/Desktop/nand2tetris/projects/07 ]$ java -version
java version "1.7.0_12-ea"
Java(TM) SE Runtime Environment (build 1.7.0_12-ea-b08)
Java HotSpot(TM) 64-Bit Server VM (build 24.0-b28, mixed mode)
[sam@SamHPUMBP:~/Desktop/nand2tetris/tools ]$ ls -la
total 112
drwxr-xr-x@ 19 sam staff 646 3 Mar 12:06 .
drwxr-xr-x@ 5 sam staff 170 7 Jan 11:25 ..
-rw-r--r--@ 1 sam staff 6148 7 Jan 12:17 .DS_Store
-rw-r--r-- 1 sam staff 272 3 Mar 12:20 .hack
-rwxr-xr-x@ 1 sam staff 196 26 Dec 2005 Assembler.bat
-rwxr-xr-x@ 1 sam staff 201 3 Mar 12:06 Assembler.sh
-rwxr-xr-x@ 1 sam staff 191 26 Dec 2005 CPUEmulator.bat
looks like those two aren't the issue ...
Sam Joseph, Ph.D.
Associate Professor
Department of Computer Science
Hawaii Pacific University