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C55x Code Generation Tool Error

Customer needs to work on an old product that was developed on CCSv3.  They downloaded CCS12 and it didn't come with the c55x compiler.  They tried to download it from here:

https://software-dl.ti.com/codegen/non-esd/downloads/download_archive.htm#C5500

Specifically via this link:

https://software-dl.ti.com/dsps/forms/self_cert_export.html?prod_no=ti_cgt_c5500_4.4.1_setup_linux_x86.bin&ref_url=https://software-dl.ti.com/dsps/dsps_registered_sw/sdo_ccstudio/codegen/C5500/4.4.1

However, they get the attached error page.

Can you assist?