i use the repeat commands for my picking up items bots
EDIT: also try restarting your game
forever start
-repeat until full
-find nearest tree seed
-move to tree seed
-pick up tree seed
end of repeating
-repeat until empty
-move to general storage
-add to general storage
end of repeating
forever end
also i use it for my shovel bot
forever start
-repeat until empty
-find tree soil
-move to tree soil
-use held item
end of repeating
-grab another axe
forever end