Well it's not only a personnal support ticket that is needed, i just had the bad idea to verify installation of MyColors on another XP SP3 PC. 
"Application is badly installed, update it", though i did, and after the reboot i had exactly the similar trouble as mentioned
Just to be sure i also did the same on a third PC and same result ...
In fact there's a big glitch between Impulse, MyColors, applications linked to MyColors and troubles are coming depending (i think) on how MyColors had been installed (before or after WB for instance ...)
If tou had the bad idea to install DeskScapes3, reboot, then verify installation of MyColors and do the update asked for it, everything's broken in Impulse, other apps are then needing updates (Iconpackager, WB ), DeskScapes 3 is not listed as installed but DeskScapes is listed as "Previous version installed" ...
Everything's is upside down
Though i think Stardock have to look at this trouble and give a fix (maybe on Impulse, maybe on MyColors, maybe on both) which will be avaible for everyone (at least XP users)