I have such error which fires on all 3 new liquids (molten gold, electric gel and silicilic acid )
It is possible that root of the issue lays somewhere in code of other mod from my long modlist, however every other planet is loading normally, while Aurelia conflicts.

134.831 Error AtlasBuilder.cpp:1266: The given sprite rectangle (left_top=0x0, right_bottom=256x256) is outside the actual sprite size (left_top=0x0, right_bottom=64x64).
If this is being used as an icon you may need to define the icon_size property.
See the log file for more information.: aurelia/graphics/icons/silicic-acid.png; mods: Flare Stack maraxsis barreling-group2 barreling_machines cargo_crates aurelia pelagos fct-barreling-machine
Prototypes using the sprite:
data.raw["recipe"]["maraxsis-fluid-void-silicilic-acid"]
data.raw["recipe"]["silicilic-acid-titanium-barrel"]
data.raw["recipe"]["empty-silicilic-acid-titanium-barrel"]
data.raw["recipe"]["silicilic-acid-flaring"]
data.raw["fluid"]["silicilic-acid"]
data.raw["technology"]["silicic-polymer"

ahh. sorry it is most probably due to reusing same icon for tech in your prototypes in tecnology-updates.lua
local silicicPolymer = {
type = "technology",
name = "silicic-polymer",
icon = "aurelia/graphics/icons/silicic-acid.png",
icon_size = 256,
effects =
{
{
type = "unlock-recipe",
recipe = "silicilic-acid"
},
{
type = "unlock-recipe",
recipe = "silicilic-plastic"
}
},
prerequisites = {"quartz-acid", "insulated-conductivity"},
unit = {
count = 250,
ingredients =
{
{"automation-science-pack", 1},
{"logistic-science-pack", 1},
{"chemical-science-pack", 1},
{"wireless-science-pack", 1}
},
time = 90
}
}