Decal changer works with old decals, but why not my new ones?

I'm using a decal changer to make a short clip out of many decals. So far, I have seen that older decals work fine with many different types of decal changers, but when I add my decals to the scenario, it just breaks and doesn't show the decals in-game and in test mode! I examined two of the same models side by side, one with old decals, and another with my new decals, and it showed the older decals changing correctly on their model, while on the other model with the new decals, they just simply don't appear! Clicking on a decal in the explorer and looking at the properties, it shows the decal IDs changing in both models the same way, and the same speed. What's the issue? Is it just that newer decals don't work? Here's the code I used including the newer decals. The script is located in a brick, with a decal inside the brick as well. The decal ID is always the first that pops up, or the first in the script.

t = 0.1 
while true do 
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160742091"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160742811"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160743216"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160743857"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160744232"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160745617"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160746248"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160746659"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160747094"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160747438"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160747847"
wait(t)
script.Parent.Decal.Texture = "http://www.roblox.com/asset/?id=2160748211"
wait(t)
end 

There isn't anything wrong with the script, it probably just needs more time to wait for the decals to load in ROBLOX STUDIO.