Unwanted X marking in Plotting

by Joey Geollegue
(Senegal)

Good day!

My name is Joey working as Autocad operator. I have a problem with plotting my drawing using Autocad 2007. X marking is shown in paper space, but I can't locate the object in model space. I tried to restart my system, make new paper space, but, unfortunately nothing works. I need help. Thanks in advance.