Loading a world that has this plugin included causes a C++ exception and leads to crashes in base MUSHclient either right away or when closing the world.
<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE muclient>
<muclient>
<plugin
name="test"
author="fiendish"
id="232929de0748519ad7b22adf"
language="Lua"
purpose="test"
save_state="y"
date_written="2020-07-05 13:33:23"
requires="5.06"
version="1.0"
></plugin><script>
function OnPluginInstall()
GetSelectionStartLine()
end
</script>
</muclient>