Oh my... Where did you find this base quest file? The tileset is from ZC <= 1.90 .... ?!
I can't promise that it won't have any other serious defects, but I patched in the current palette and tiles, and I fixed the quest icons for you.
http://timelord.insomnia247.nl/zc-de...v127-fixed.qst
Unfortunately, it won't be set up for any of the new tiles, and splicing in the current combo table isn't an option. It'd probably be better to re-create your maps using the current base files, to avoid issues, but at least this will remedy your immediate concern. You just won't have any of the new graphics that have been added to the base ZC tileset over the last seventeen years.
P.S. You may want to
rethink the Magic-Octorock spam on the overworld, too. Other than that, it looks to be a fun little dungeon romp, en Deutsche.