If the application refuses to uninstall, you can always use an unlocking application. For instance, Unlocker is capable or unlocking the processing so that you may delete it when it's necessary. However, LiveBoost can also be related to malware or adware infection, and in this case you need to use another tool. Run a copy of Combofix and you should be able to remove the application from your computer. Alternatively, right click the file then select Unlocker after you've installed it, delete the file then run Combofix.