Never mind, I see how to access the utility menu now. To answer the other question, yes, my path variable does include /usr/local/bin and the executables in /usr/local/bin work just fine. However, disabling the SIP and moving the executables and lib directory to /usr/bin and then re-enabling the SIP fixed the problem and I am now able to convert dual iso .cr2 files to .dng files. Thank you for your assistance, I greatly appreciate it!