SQL Query Tuner, tuning from DBOptimizer

Hi,

I am new to this so not sure if I should write this here or somewhere else.  I am using DBOptimizer and I right click a query to tune,  What I get in the Tune window is SELECT x: Table cannot be resolved and no more explaination.  The table exists, I have enough rights so what does this mean?

Kind Regards
Thorir