Start from upgrading to latest V8 version.
I moved from V7 to V8 when V8 reached 8.0.3, so I have never used 8.0.1. It is because typically first new main version releases have many bugs. Each last digit version number change means several dozen bugs fixed.
After you are finished with upgrading you should put on a record and listen to your favorit music. Afterwards you open kicad schematic–>File–>Schematic Setup–>project–>bus alias definitions and carefully look through the “Alias” column. You will find two rows with different definitions for “CB18”. Delete one.
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open kicad schematic–>File–>Schematic Setup–>project–>bus alias definitions and carefully look through the “Alias” column. You will find two rows with different definitions for “CB18”. Delete one
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That does it! Why didn’t I tink of looking there.
Many thanks