Yeah happened to me I had to re install the software and white list VorpX in my Anti Virus software. I assume that it is a false positive in that it has to do with how the software works in injecting itself into games etc.
@ Echymo: If you use Windows Defender, please try a manual Windows update check in the Windows settings. Defender falsely flagged the latest vorpX version as malicious. The issue has been resolved in the meantime by Microsoft, a manual Windows update check will get you the latest Defender definitions.