We’re sorry you are experiencing this unfortunate Microsoft issue - it is not caused by our system!
The error message you're getting says something about Revizzit being "not commonly downloaded and could harm your computer."?
We do know of this type of message that is being brought about by Internet Explorer 9's SmartScreen Filter. This unfortunate filter is affecting many small software developers and suggests that their software is harmful.
If you Google "SmartScreen harmful message" you will see that everyone is upset by this. One easy way to get around this is to change your default browser. You would need to set it as your default, at least until the installation is complete. Ultimately, of course, the decision is yours.
We suggest switching to Firefox or Chrome - you won't see any such messages there.
Additionally, here is Microsoft's page on SmartScreen and how to bypass it or turn it off: http://windows.microsoft.com/en-US/windows7/SmartScreen-Filter-frequently-asked-questions-IE9
Revizzit runs on the Adobe AIR platform and is VeriSign approved.
Here are some important links about our technologies: http://www.verisign.com/code-signing/adobe-air/index.html