Hour Problem

[Nachos]

Hey, i'm using GaveUpTomorrow's GaveUpSingle Menu 109.
I copy the script to my game and everytinh works fine. But when I try to load a file, says:
"Script "Day/Nigh" line 369. NoMethodError Ocurred.
Undefined method "get_hour" for nil:NilClass"

Here is the part of the script:

#--------------------------------------------------------------------------
# ● Updates the Array based on time of day
#--------------------------------------------------------------------------
def update
LINE 369 if $game_time.get_hour > 7 and $game_time.get_hour < 14
hide
else
show
end
end

any idea?

i can't load!

IN THE DEMO I DOWNLOADED (GAVEUP) WORKS LOADING, BUT NOT IN MY GAME