Comment 5 for bug 1486933

Regarding the original bug report:

1. The undo errors have been solved by other bug fixes.

2. I believe the "can't find pin" errors are the result of the names chosen for the connectors. Replacing "a", "b", and "c", with "J1", "J2", and "J3" (in the file prior to loading) allows the connections to autoroute normally.

Note: see this page on the wiki
http://wiki.geda-project.org/geda:pcb_tips
specifically the 4th bullet of the section titled "I want to draw a track between two segments on the same net, but PCB won't let me! Why?" which notes that lower case letters at the end of ref des are used to indicate slots on devices.