The quickest way to tell if it is registered correctly is to go to Start / Programs / SaberLogic Logicity / Register Logicity. When the window pops up if you see a green check mark to the right of the serial number field you should be all set.
The other thing to check is that you are running the recently uploaded Logicity 1.6.0025 as we had a bug fix related to command line replacements in that version. If all else fails maybe you could send me your RRD file to
a_e_l_l_i_s@saberlogic.com (remove the underscores) and I'll check it out to see if something jumps out at me.