ID:19268 Perform Analysis and Elaboration before generating data for RTL Viewer and make sure you have the data for any imported partition.

CAUSE: You attempted to generate data for RTL Viewer, but the Quartus Prime software cannot do it until the RTL netlist is generated. To generate the netlist, you must eitherperform Analysis & Elaboration for normal compilation or perform a partition import for incremental compilation. After the RTL netlist is generated, the RTL Viewer displays the data.

ACTION: Perform Analysis & Elaboration for normal compilation or perform a partition import for incremental compilation, and then generate the data for RTL Viewer.