Crash when specifying mapgen parameters in group format

[zing269]

If I try to specify mapgen parameters using the group format at the game level, ie in /minetest/minetest_game/minetest.conf, minetest either crashes (sfan5's last build) or causes an error (Krock's last build). No problem if I using the single line format and it also works if I use the group format at the base level, /minetest/minetest.conf.

Here's the error I get from Krock's build:

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Code: Select all

2016-09-11 13:22:34: ERROR[Main]: MAINMENU ERROR: Runtime error from mod '' in callback ScriptApiMainMenu::handleMainMenuButtons(): Setting [mgv7_np_terrain_base] is a group.
2016-09-11 13:22:34: ERROR[Main]: stack traceback:
2016-09-11 13:22:34: ERROR[Main]:    [C]: in function 'create_world'
2016-09-11 13:22:34: ERROR[Main]:    ...etest_krock\bin\..\builtin\mainmenu\dlg_create_world.lua:97: in function 'handle_buttons'
2016-09-11 13:22:34: ERROR[Main]:    C:\Games\minetest_krock\bin\..\builtin\fstk\ui.lua:148: in function 'handle_buttons'
2016-09-11 13:22:34: ERROR[Main]:    C:\Games\minetest_krock\bin\..\builtin\fstk\ui.lua:192: in function <C:\Games\minetest_krock\bin\..\builtin\fstk\ui.lua:178>
2016-09-11 13:22:40: ERROR[Main]: Provided world path doesn't exist: C:\Games\minetest_krock\bin\..\worlds\world


I've opened an issue, https://github.com/minetest/minetest/issues/4518