By methodically applying the solutions in this guide—shortening paths, excluding antivirus folders, purging old netlist files, and checking pin numbering—you will eliminate 99% of error 157 occurrences. For the remaining 1%, tools like dbdoctor.exe and XML export/import will resurrect corrupted projects.
: Intermittent warning #157, then full error. Root Cause : A connector symbol had pins numbered 1,2,3,0. The 0 pin (illegal in PCB footprints) caused mapping failure. Fix : Renumbered pin 0 to 4. Never saw error 157 again. cadence orcad 157
It supported Monte Carlo analysis, sensitivity analysis, and worst-case scenario testing to predict circuit yield and reliability. excluding antivirus folders