Trouble importing .mts/ AVCHD video files from an SD card into FCPX or any HD connected to my mac.

I successfully imported video footage into FCPX from SD #1 card of #2

This is my first attempt to import video files into FCPX. (new mac, new OS, new FCP )

I attached SD card #2 to my mac and tried to open it to import into FCPX or any HD for that matter.
When clicking on the AVCHD icon, my screen went crazy as QT tried to open all video files. Some where between card one and two I missed everything. Im attaching screen shots, so those in the know can get me back on track for importing the rest of the video files. Had to force quit QT. Later I ran a restart and the same problem came back. Im sure Im missing something simple.

THNXS

Hey Gary,

The screenshots are missing.

Did you wait until FCP X finished importing the first card and until all background processes were finished before you inserted the second card?

- Ronny