Body of my most recent post being overwritten

Hello

I just set up my blog http://www.thetrancelife.com and all was going pretty well and I was just about to start letting people know about it and all of a sudden this bug has crept in that changes the text body of my most recent post to the number “1”. If you look at my blog you’ll see the most recent post called “Test” just has a “1” for the post contents no matter what I write in there.

If I revert back to the default theme it still happens.

Can anyone shed any light on this please?

Many thanks