Why does the Arria 10 Low Latency 10G MAC IP Example Design Generation fail on Windows 7?

This problem can happen if the required Windows Environment settings are not correctly set during the Quartus Prime installation.

To work around this issue manually make or ensure that the following windows environement variables are set on your system:

User Variables
Path : <your install location>\modelsim_ae\win32aloem;
QSYS_ROOTDIR : <your install location>\quartus\sopc_builder\bin
QUARTUS_ROOTDIR : <your install location>\quartus

System Variables
Path : %QUARTUS_ROOTDIR%\bin;%QSYS_ROOTDIR%
QSYS_ROOTDIR : <your install location>\quartus\sopc_builder\bin
QUARTUS_ROOTDIR : <your install location>\quartus
SOPC_KIT_NIOS2 : <your install location>\nios2eds

This problem is scheduled to be fixed in a future release of the Quartus Prime software.

Please also refer to this related solution rd03282016_423.