I updated Dimension Pro 1.2 to D-Pro 1.5 - now my projects can't find Dimension Pro!

Can some kind soul tell me how to fix this? 
 
I followed the instructions given elsewhere in this forum to completely uninstall Dimension Pro 1.2 (registry cleaning and all) and run the 1.5 installer clean.
 
A new project will take a new instance of Dimension Pro (presumably the 1.5 version) but any pre-existing project that had an instance of Dimension Pro is now complaining that the plugin can not be found.
 
Is there a way to fix my projects so that the plugin reference is pointing to D-Pro 1.5? I'm hoping my project patches will be retained.
 
I guess I could insert new instrument tracks and copy the MIDI data over... but I really don't want to have to do that. 

Oh, so D-Pro 1.5 is VST only? And Dimension Pro 1.2 was DXi ? 
 
Yeah, that explains some things. I should have paid more attention. 
 
Thanks, scook.

At this point, there is no trace of Dimension Pro 1.2 on my machine. I downloaded the 3 GB D-Pro 1.5 install and did a full install.
I've verified that programs (.prog) that I created  and saved with the older version will load up in the new one, and just work (yay).
 
Fortunately - or maybe it's one of the reasons I felt I could get away with doing it this way - I only use D-Pro for Strings and Miramba.