Hello from newby.

I downloaded Bitcoin Knots and let it run overnight to download all block chain. Problem is partition it was running did not have space.
In the morning I found the program crashed.
Since then whenever I try to start it I get error: "Cannot obtain a lock on data directory c:\program files\..... Bitcoin Knots is probably already running. The system can not find specified path"

I tried deleting the lock file - no use.
I tried moving all the "blocks" directory hoping it will ask me where it is. No use.

Any hints?

Thanks in advance.