Due to a problem with the Reed-Solomon II Intel® FPGA IP core in the Intel® Quartus® Prime Pro Edition version 18.1 software, the error above will be seen if you have more than one instance of the Reed-Solomon II Intel® FPGA IP with the same module type but with different settings in your design.
Device Family: Intel® Arria® 10, Intel® Cyclone® 10 GX, Intel® Stratix® 10
Intel Software: Quartus Prime Pro
Type: Answers
Area: DSP
Last Modified: July 08, 2019
Version Found: v18.1
Bug ID: 1507275878
IP: Reed Solomon II
Error(13225): Can't open VHDL or Verilog HDL file "_altera_rs_ser_enc_181_kgxbvnq_alphas.hex"
Description
Workaround/Fix
To work around this problem, copy the HEX files from the IP generated HDL folders to the project directory and recompile your design.
This problem is scheduled to be fixed in a future version of the Intel® Quartus® Prime Pro Edition software.