For those of us that uses mods that makes havoc with the Quality setup, could you please consider to change the following code for the future?
In prototypes\science.lua line 127 - 141: (Version 1.3.3.)
New code: (Its only the first and last line that is the change)

if data.raw.technology["legendary-quality"] then
data.raw.technology["legendary-quality"].prerequisites = {"promethium-science-pack-dupe", "epic-quality"}
data.raw.technology["legendary-quality"].unit =
{
count = 5000,
ingredients =
{
{ "automation-science-pack", 1 },
{ "logistic-science-pack", 1 },
{ "chemical-science-pack", 1 },
{ "production-science-pack", 1 },
{ "utility-science-pack", 1 },
{"promethium-science-pack", 1}
},
time = 60
}
end

will be in the next release, which should be soon. thank you for your message.

Thank you. I don't need that now. I have locally patched it, but it would help me in the future so that I don't need to patch it with each upgrade.