sberman wrote:
Just a small clarification to add to the above responses:
Your error message says "Power PC application no longer supported." Realize that Power PC architecture has been abandoned by Apple long ago. The last Apple operating system to natively support Power PC applications was OS X 10.5 (Leopard), which was discontinued in 2009.
So it's (way past) time to throw away your PowerPC compatible software and update it as suggested in the posts above.
Just a small clarification to add to your response:
The last Apple operating system to "natively" support PowerPC applications was the PowerPC version of OX X 10.4 (Tiger), which was discontinued when Apple released the Intel version of Tiger in 2006.
Intel Tiger, Leopard and Snow Leopard all continued to provide Rosetta so as to allow users the transparent ability to run PowerPC apps.
To those still needing to run PowerPC hardware and software in a modern Mac world, running Snow Leopard Server in virtualization has, for the most part, restored Rosetta to those who need it in Lion, Mt. Lion, Mavericks, Yosemite and El Capitan.