Installed free upgrade of NIS 2011, now I've exceeded the 3 installs

Tonight, I attempted to install the free upgrade of NIS 2011 over NIS 2010 and when I did, it deleted 2010.  I reinstalled NIS 2010 from the original disc, but I have exceeded the three installs allowed.  Just prior to this, I recently paid $59 and renewed NIS 2010 for an additional year, but now all the program shows is a 15 day trial period.  What can I do?

 

 

[edit: Clarified subject.]