During installation, the software will automatically unpack certain folders on your computer. The compressed file of the installation package is:
C:/Program Files (x86)/Voicent/Gateway/webapps/ROOT.war
This file will be automatically unpack and create a folder names ROOT. When the system failed to finish the unpacking, the installation will fail.
This problem is usually caused by slow computer hard drive. You can click the Start button again to try to unpack.
One thing that may slow down the unpacking is your anti virus software. It may scanning the newly created files in the background. You can temporarily turn off these programs and try to start Voicent again. Once it starts successfully, you can turn on the anti-virus program again.
If it continues to fail, you may have a very slow hard drive. Try it on a different computer.