Hi,
In addition to Gautam's suggestions, please check a few SRIO posts across e2e that talk about initialization and operation of this peripheral.
http://e2e.ti.com/support/dsp/tms320c6000_high_performance_dsps/f/112/t/36961.aspx
http://e2e.ti.com/support/dsp/tms320c6000_high_performance_dsps/f/112/t/11780.aspx
It seems the project migration went well (I would have done the same thing as you: re-creating everything from a clean new project) and unfortunately the issue with the code functionality is not part of our core expertise. Also, keep in mind that some of the older initialization routines may need to be modified to be fully functional with newer software components such as DSP/BIOS.
I strongly suggest you to send a question to the C64x Single Core device forum and give details about the SRIO connection and how you want to initialize the SRIO (possibly sending the code and the parameters you used). It is even possible the person that created this example code is still available to help you there.
Regards,
Rafael