I Googled .vns and found:
"A file with the .vns file extension is known as a Visual Net server file. Visual Net is a program used to convert documents to XML or Extensible Markup Language, a universal system for preparing documents electronically for use on the internet. A number of files are associated with Visual Net, including .vns files".
Is iClone4 assessing the internet each time I open a project?
You know when you're spending too much time with iClone4 when you scream out its name when making love!