My Suggestion is not to go back to FTM 2010

There are many more erors in the reports in FTM 2010 than there are in FTM 2011. Also, it is necessary to continue to reset your report settings over and over in FTM 2010. Also Ancestry.com will not update FTM 2010, all their updates will be to FTM 2011. If you want to move backwards to a previous better version of Family Tree Maker, FTW 2006 v16 is the version to move back to and then wait until the 2008/2009/2010/2011 etc versions have been fixed