If you are running Visio 2010 on Windows 7 x64 and it keeps crashing, you might be experiencing the "Send to Bluetooth" add-in issue.  To remove the add-in follow these steps.

1. Start Visio as administrator by Shift-right clicking the Visio shortcut and select "Run as administrator."
2. Select File | Options.
3. Select Add-Ins from the links on the left of the Options dialog.
4. Click the Go… button next to the Manage COM Add-ins drop-down list at the bottom of the Options dialog.
5. Select the Send to Bluetooth add-in and click Remove.

Now maybe your Visio won’t keep crashing!

I’ve been having some issues with Visio 2010 throwing an error (Microsoft Visio has stopped working) when I’m closing it down and tracked it back (with the help of others) to potentially the "Send to Bluetooth" add-in.  I’ve since disabled it using this procedure.

Under the File menu (backstage), select Options.  Click on Add-Ins.  Click on Manage Visio Add-ins and click the Go button.

Uncheck Send to Bluetooth and click OK.

It should show up in the Inactive Application Add-ins.  Check it out and see if you still get the error.