Visio crahses permanently if you work in process4.biz
Process4.biz is not compatible with some Visio Add-Ins like “Bluetooth” for example. Installing process4.biz and some the other Visio Add-Ins can lead to some problems, e.g. Visio crashes.
If some Add-Ins which can cause problems are installed, a special warning informs you about it:
All installed Visio Add-Ins are also listed in the mail generated if you click on the button ”Report a problem“.
Information on how to deactivate such Add-Ins can be found here: http://support.microsoft.com/kb/937997.
Visio 2010 SP3 disables the bluetooth Add-in automatically:http://blogs.msdn.com/b/visio/archive/2011/10/31/visio-2007-sp3-available.aspx