Just ignore it -- no problems for you, someone just submitted a bad block.
The network is rejecting it like it should.
It should not but happened.
I had about 150,000 XRX mined, only 1,500 were left, which I obtained on January 15.
150,000 have disappeared. address of the wallet or what kind of change I did not make.
Oh crap: can you stop "walletd.exe" and copy rcoinx.wallet from your user folder to "your-user-folder/AppData/Roaming"
I changed the default path