Any reason the BU node count is dropping again? (770 – 602 today)

Another node issue?

https://coin.dance/nodes/unlimited

EDIT: 489 nodes up @ 21:35 GMT

EDIT: BU node version 1.0.1.1 on linux 64bit error:

ERROR: ReadBlockFromDisk: OpenBlockFile failed for CBlockDiskPos(nFile=-1, nPos=0) https://github.com/BitcoinUnlimited/BitcoinUnlimited/issues/386