Just reporting about this issue from here.
As shown, the random encounter that pops up between Nashkel's Carnival and it's Mine area for some reason becomes the ar5301.are, which is the one with Wyverns, Spiders and/or Ettercaps, which should only be in between the Cloakwood area maps.
Worldmap --change-log:
Mods affecting WORLDMAP.WMP: 00000: ~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ 0 0 // BG2 Fixpack - Core Fixesv13 00001: ~BGT/BGT.TP2~ 0 0 // Baldur's Gate Trilogy - Corev1.21 00002: ~GARRICK-TT/SETUP-GARRICK-TT.TP2~ 1 0 // Garrick: Tales of a Troubadour1.26 00003: ~SETUP-BGTTWEAK.TP2~ 0 2500 // Access Ulgoth's Beard west of Wyrm's Crossing only11 (5 Feb 12) 00004: ~SETUP-BGTTWEAK.TP2~ 0 2600 // Prevent access to Durlag's Tower from adjacent areas11 (5 Feb 12) 00005: ~BP-BGT-WORLDMAP/SETUP-BP-BGT-WORLDMAP.TP2~ 0 0 // Worldmap for Baldur's Gate - including colored Baldur's Gate map iconsv10.2.5 00006: /* acted upon in an undefined manner */ ~GENERALIZED_BIFFING/GENERALIZED_BIFFING.TP2~ 0 1 // Generalized BiffingBiff all files (recommended by the Big World Dudes)v2.3
If memory serves, the Worldmap mod should be the only mod that is actually effecting the end file, as it needs to be overwritten and then patched. Now, of course the other mods add into the Worldmap mods files to add their patching, but that only tells us that one of the above mods has to have wrong code in them, to accord this kind of mistake.
Edited by The Imp, 01 October 2020 - 11:52 PM.