Error (171011): Can't assign node "" to location -- node is type Combinational cell

Hi Raj,

The possible reason for the issue you faced is using Quartus design generated by HLS compiler and re-assigning virtual pins to physical ones with the Assignment Editor.

Based on my experience, the Assignment Editor might not remove virtual pin assignments from *.qsf file but hide them in its GUI window. Having both virtual and physical pins assigned to the port results in error message "Error (171011): Can't assign node "PIN_..." to location -- node is type Combinational cell." Please search .qsf file of your project in the text editor and comment out/remove undesirable virtual pin assignments.

Regards,

Igor.