When compiling a design containing more than one instance of the Intel® FPGA FFT IP (altera_fft_ii), the Intel® Quartus® Prime Pro Edition Software and Intel® Quartus® Prime Standard Edition Software may produce the following message as an error or critical warning.
Can't find Memory Initialization File or Hexadecimal (Intel-Format) File
The software is looking for the files in the project directory, but the files are located in the IP directory. (The project directory is where the .qpf file is located.)
To work around this problem, add the IP directory paths to the Quartus® settings file. (.QSF)
In the following lines, replace fft_inst1/altera_fft_ii_181 and fft_inst2/altera_fft_ii_181 with the names of the FFT IP instances in your project and copy the lines to the .QSF file.
set_global_assignment -name SEARCH_PATH ./fft_inst1/altera_fft_ii_181/synth
set_global_assignment -name SEARCH_PATH ./fft_inst2/altera_fft_ii_181/synth