Ha! Ok, I figured it out. I will answer your questions first though. I just upgraded to SL 10.6.3 yesterday...I know, long time coming! I'm still running LP8 but LP9 is literally in the mail. As far as key commands working, yes, but with a twist. I think I changed the template for key commands from a Photoshop tutorial I did about a year ago and I forget how to go back to the original template. Could you help with that? i.e. to go to the next marker I have to type control command right arrow instead of control command period. I would like to go back to the original template.
Ok, long intro. The cause of the original problem was that somehow I managed to create a duplicate marker at the exact same location as the marker I was stuck on. The duplicate was hidden behind the marker that was supposed to be there. I guess having two markers in the same place locks the goto marker function at that point....weird. At any rate, I deleted the duplicate and everything works fine. Thanks for your always timely responses, Rounik! I am nominating you for man of the year!