I checked the level in question and I have no problems obtaining the talisman. This holds both for the stable version V10.12.12-C and for the latest experimental version V10.13.16_4308379.
Could you please update to the latest NeoLemmix version and then check again whether the talisman works or not? If not, could you please send me a replay that should obtain the talisman but doesn't actually do so? In that case it would help me to have the single levels of your first rank (as contained in the "levels" subdirectory of your System.dat file), because then I wouldn't have to decode the talisman file by hand, but could just look up the talisman in the flexi toolkit.