Well i guess you want to place guns/items for players to pick up?
Therefore check your
items.dat
file.
As Ted already posted, please be more specific in describing your problem in topic and also in topic title.
Titles like "Help!", "Problem occured" or similar are not very likely seen in forums..
Two things fill the mind with ever new and increasing wonder and awe - the starry heavens above me and the moral law within me. Immanuel Kant