Greetings!

I am curious why the player software can build the databases under command line but not under emplode / jemplode. To me, this implies that the filesystems should be fine, but that there might be a memory issue involved. When the player is loaded (as during an emplode or jemplode), I would expect that there is less memory available for the database rebuild.

Question: I notice that you have a swapon in your boot log. Is that normal? I just do not remember seeing it myself.

You might want to try and throw a reservecache option in your config.ini. Try holding back some memory from the player application. Perhaps that will help, by making a little more available to the kernel.