Hi Everybody. I have a weird problem in pcbnew, and maybe you can help. When I load a new netlist from pcbnew, one of the power lines (VDD) goes from a component pad to infinite, out of the screen. It seems like if it’s not connected to anything, but it is. I’ve already checked all connections in Schematic.
You can see what I mean in the attached picture:
http://postimg.org/image/ts638sppt/
When loading the netlist, I’d check “Delete unconnected tracks” and “Delete extra footprints” just to be sure there is nothing left from previous iterations.
If nothing helps, I’d open the resulting pcb file in a text editor and search for a module with weird coordinates maybe?
Thank you for your answer Dolganoff. I’ve tried your indications, but they didn’t work. It’s really a weird problem…
So the wire appears even when you redo the board from scratch, just loading the netlist?
Can you share your net file (and maybe cmp file if you have one?)
Yes, the problem persist even redoing the board. Here is the netlist and cmp file:
Hi again. I think I’ve found the problem. Looking into the kicad_pcb file with a text editor, I’ve found a duplicate entry for a pin in one of the components. This quite strange since I’ve reviewed the schematic library and the module footprint library and there is no duplicates for that pin in that component… Could that be a Kicad’s bug?
You may have two pins overlaying one another, placed at exactly the same place. Try to move the pin, you’ll see another one maybe?
Besides, the duplicate pin should’ve been caught and component indicated in the netlist loader log (the text appearing in the lower part of the window when you load the net file I guess.
I’ve already thought that, but I haven’t duplicated pins (I’ve moved the pins) and I don’t get any indication when I load the netlist. I solved the problem just deleting the duplicate entry in the kicad_pcb file manually.
That’s all very strange indeed!
What part and pin was it?
Yep, very strange 
It’s a switch: SSAJ120.
I guess you’ll have to share the schematics and your custom library so we could investigate further. The netlist shows the switch has connections on its pins 2 and 3. The 1, 4 and 5 aren’t connected to anything in the schematics. Did you place the “no connect” symbol there?
Is ERC check clean in the eeschema by the way?
Hi Dolganoff. I have errors and warnings in ERC (none of them related with that component). In any case, I never trust ERC when I design, just DRC in layout design.
For now, it seems that everything is working fine. Even when I make a new change in schematic and update in pcbNew, the “ghost wire” doesn’t show again.
When I have a while, I’ll redo the module just to be sure.
Thank you for your help!!
Well, no need to call Ghost Busters anymore 