Considering your world will depend on it, so you can't just remove it, it should absolutely not crash.
Update
Seems to be fixed now. Note that it doesn't seem suited to survival with the singlenode map generator because there don't seem to be any metal ores inside the islands even when ores is enabled in the settings.
Sometimes the island densitiy can be low too and at other times it's perfectly fine. So maybe generate a few worlds before you decide which to build in.
Thanks for the stack trace, this is fixed by v1.55
(fwiw bugs are often better raised using the Issue Tracker link, I only happened to see this comment notification because I logged into the ContentDB website for some Amidst work)
For metal ores on singlenode, you can set the island altitude to be a suitable height for finding ores, e.g. the floatlands altitude of 1024+ provides both plantlife biomes and metal ores.
Settings → All Settings → Content: Mods → cloudlands → Altitude of islands
Alternately for finer control, edit the y_min and y_max values of the register_ore() statements in minetest_game's mods/default/mapgen.lua (if you're using it with MTG)
Considering your world will depend on it, so you can't just remove it, it should absolutely not crash.
Update
Seems to be fixed now. Note that it doesn't seem suited to survival with the singlenode map generator because there don't seem to be any metal ores inside the islands even when ores is enabled in the settings. Sometimes the island densitiy can be low too and at other times it's perfectly fine. So maybe generate a few worlds before you decide which to build in.
Thanks for the stack trace, this is fixed by v1.55
(fwiw bugs are often better raised using the Issue Tracker link, I only happened to see this comment notification because I logged into the ContentDB website for some Amidst work)
For metal ores on singlenode, you can set the island altitude to be a suitable height for finding ores, e.g. the floatlands altitude of 1024+ provides both plantlife biomes and metal ores.
Settings → All Settings → Content: Mods → cloudlands → Altitude of islands
Alternately for finer control, edit the y_min and y_max values of the
register_ore()statements in minetest_game'smods/default/mapgen.lua(if you're using it with MTG)