Procite is freaking out!

Hi, my Procite 5.0 is doing something really odd and I can’t figure out why.  It has been working well for the past few years but all of a sudden, everytime i generate a bibliography, it inserts random citations into my bibliography that are not remotely related to my in-text citations.  I have a PC and have made the necessary updates for Windows XP.  Someone help!  :mansad: