Jennifer,
The other option is to uninstall the software using a free program called Geek Uninstaller (If you do not have the paid for Uninstall Tool program). This program will help remove all Vegas 14 files.
After you reboot, it is always advisable to disable or turn off any Anti-Virus also any other program running in real-time similar to Spybot SD Resident program. Basically anything non-essential should not be running so when you re-install Vegas 14 nothing should interfere with the installation process.
The other item to perform is to make sure your Video Drivers are updated to the latest version. If the computer system is used a lot (saving, editing) I would also recommend that you perform a complete Defrag Before you reinstall Vegas 14.
I know a lot of these are basic things, but just thought I would bring it up since they do help in a lot of situations.
Good Luck.
– – – – –
FixitMad