I'm rather new to MacPerl so please forgive me if this has been hashed through before. I'm running MacPerl on a Quadra 900. I installed the MPW shell off of my CW8 CD (MPW 3.4) and tried to use the MacPerl 506 MPW tool (68k version, naturally). After issuing the comand, the computer would think about it for a moment and then MPW crashed every time. I was able to successfully run the MacPerl 506 application on my computer and I got the 4.1.8 MacPerl MPW tool to execute without a hitch. Is there a known reason why the 506 tool will not work? Scott Thompson Software Engineer Macromedia DAG