Meeting "Invites" not received as "invites" but as empty emails

Question

My family all have Blackberries of varying generations and updates. We are on a Verizon family plan.
We frequently use the "meeting invite" function to send each other calendar entries of our activities, in order to do the "family synch" of logistics and administrivia.
However, in the past few days, we noticed that our "invites" to each other are arriving to the recipients as emails--empty emails. The only thing on the email is the FROM and the TO and the subject line. The rest of the email body is empty and there is nothing about the email to indicate it is a calendar entry or meeting invite. There is no place for the recipient to "accept" "decline" or "mark as tentative," either. There is no indication to the sender that the invite was received or responded to in any way, either.
It doesn't seem to matter which one of us is sending which other one fo us a meeting request...it is just not arriving as a request or invite at all.  Ironically, my office Blackberry--the oldest of all of them--is the only one that can still send an "invite attendee" for a new appointment or meeting request, and it will arrive in a useful format to the recipient, who can than "accept," etc.  However, it will no longer receive the "invitation" correctly, but instead it also gets the request as an obscure email.
Please help! Our family's sanity depends on this function!

Answer 1

I Fixed mine..  This is how
1.  Contact Blackberry Tech support and mention tis article
http://btsc.webapps.blackberry.com/btsc/search.do?cmd=displayKC&docType=kc&externalId=KB17471
2.  Then advise then of this solution
Resolution: 
Reintegrating email address to use POP instead of MSNMSP resolved issue
 Then all your issues are fixed.  Good luck