i am working with PIC32 micro. I tested with typical continuity tester, between pins to headers, between pins and between headers connection, same results.
first on one side, i noticed this after soldering and checking each pin(my first time so...). I looked with magnifying glass into the pins for any sign of shorts, nothing I could see. I re-soldered the specific pins, same result. Then I left this side and went on to the another side and I noticed that there is again continuity between two pins and same for their headers. This side had continuity between pins that are far apart.
While the other two remaining sides have no continuity.
micro-controller pro should know this kind of thing I suspect.