I just purchased family Tree maker 2011, installed 4 days ago and all was fine, Ancestry to ask if it was safe to uninstall my old Family tree maker 2010 as I didnt want unnesasary software on my drive they said it was absoultely fine to do so, so I went ahead, when I uninstalled FTM2010 using Advanced Uninstall BOTH FTM 2010 and 2011 has gone. I try to reinstall FTM 2011 and get the message as follows.
Installation package could not be opened. Verify that the package exists and that your can access it, or contact the application vendor to verify that this is a valid windows installer package. Family Tree Maker 2011.msi.
I then tried to install software on my old Laptop and it installed OK, so it seems to be something on my PC stopping the install.
I have been in touch with Ancestry and they just said get someone to look at your PC. I also contacted Avanquest yesterday (the vendor) but still awaiting a reply from them.