December 19th, 2013 07:06 PM
UniBeast has detected that your copy of "Install OS X Mavericks.app" is incomplete and you need to download it again from the Mac App Store.
Before you download it again, make sure that:
1) You only have one copy of "Install OS X Mavericks.app" and it's in /Applications
2) Your system language is English
3) You are not using case-sensitive...