Thinking way back, I believe we had this problem with some not-so-electrically-great PCIe cards. Have you tried a few different cards? We use a uCube3 box here now, and it seems to tolerate cards better than the FMC adapter.
No. But I think this is not the problem with the card. I got the same entry without any card attached to FMC adapter. Can you post your bbl.bin file somewhere? I tried to make it on different platform, but there is no difference.