It is so troublesome and frustrated trying to use SDL Threat modeling tool :(. A little bit of background:
I got some problem with latest Office beta so I uninstalled all and installed Office 2012 Professional again. Prior to this, SDL threat modeling tool worked fine. After I reinstalled Office 2010 + Visio Premium 2010 + Visio Prof 2007, SDL Threat Modeling
tool doesnt work anymore. I reinstalled it and I was able to install successfully (no Visio question pop up). However, every time I start Visio 2010 I got this pop up:
"Visio is not installed. Please install Visio 2007 or 2010 before using this tool"