try use this
function txdClient ()
tekstura = engineLoadTXD("files/mp_diner1.txd")
engineImportTXD(tekstura, 18056 )
end
addEventHandler( "onClientResourceStart", resourceRoot, txdClient )
addEventHandler("onClientResourceStart",resourceRoot,
function ()
local version = getVersion()
if string.find(version.mta, "1.3") then
setTimer ( load, 1000, 1)
end
end)