ID:171065 Can't use previous post-compilation netlist in Fitter -- netlist contains duplicates of signal name "<name>"

CAUSE: The previous post-compilation netlist for the design contains two or more signals with the same signal name. As a result, the Fitter cannot perform a incremental Signal Probe compilation, Signal Tap incremental routing connection or ECO fitting. The Quartus Prime software cannot consistently process the netlists because of the duplicate signal names. This message can occur when the EDA synthesis tool generates the Verilog Quartus Mapping File (.vqm) incorrectly or you have manually edited the VQM File for the project.

ACTION: If you manually edited the VQM File for the project, change the VQM File to remove duplicate signal names. Otherwise, contact the EDA tool vendor support for more information.