problem with the execute arbitrary SQL query window

Hello and good day

I am learning postgresql, and I started on 4/21.  I downloaded the files, set everything up, found some tutorials online, and all was great.   The next day, I started up my pgAdmin3 window and clicked on the execute arbitrary SQL query button like I had done most of the previous day, and the window would not populate.  If I moused over the menu and bottoms on the top, they would show up, but the rest of the window is blank.  I searched online, but I could not find anything to help.  I am using windows 7 and the latest version of postgresql

Any thoughts as to how I can get this window populated again, and I can start learning :)

Jeff
 
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