[Phanx]

You need to comment out the parts of the code that try to manipulate the elements you already prevented from being created:

Line 69:

self.Lag:SetFormattedText("%d ms", self.SafeZone.timeDiff * 1000)

Lines 101-105:

        local sf = self.SafeZone
        sf.timeDiff = GetTime() - sf.sendTime
        sf.timeDiff = sf.timeDiff > self.max and self.max or sf.timeDiff
        sf:SetWidth(self:GetWidth() * sf.timeDiff / self.max)
        sf:Show()

There may be others; you should be able to find them pretty quickly for any sections of code that either check for the "player" unit or attempt to do anything with the Lag and/or SafeZone members.