Moving your thread to the Premiere Elements forum, where you'll probably find more help with this.
Adobe advised you wrong. Elements 10 consists of three programs, each of which have to be the same version number to integrate:
EO10: Elements Organizer 10
PRE10: Premiere Elements 10
PSE10: Photoshop Elements 10
Insanity is hereditary, you get it from your children
Elements 9 as you say (Elements Organizer 9) would not work with Premiere Elements 10. For inter-operability, version should be same.
So, if you want to use Elements Organizer 9 with Premiere Elements, you should have Premiere Elements 9, and for E10, you have to have PRE10.