Can anyone answer this? have the same thing,
If no one answered this poster?
Client seems to be running, but still curious.

I did some research and only found this,

https://nextcoin.org/index.php/topic,1277.msg10730.html#msg10730
bulletin 7.3

tried removing the blocks and tx., and it didn't fix this warning.
Looking at some Java forums, seems like it could be related to the start.bat?

Running 5.8 verified. Windows.
with start.bat pointed to java and
-jar start.jar