Theages

Well, I did the change according to step 65 of the install instructions. The first warning appears after (!) I changed the oAR0602.baf:

IF
OnCreation()
Global("NewGame","AR0602",0)
Global("ENDOFBG1","GLOBAL",1)
THEN
RESPONSE #100
SetCutSceneLite(TRUE)
FadeToColor([1.0],0)
SmallWait(10)
MoveViewPoint([0.0],INSTANT)
StartMovie("SOAINTRO")
SetGlobal("NewGame","AR0602",1)
SetGlobal("ENDOFBG1","GLOBAL",2)
Continue()
END

here is my weidu-log:
// Log of Currently Installed WeiDU Mods
// The top of the file is the 'oldest' mod
// ~TP2_File~ #language_number #component_number // [Subcomponent Name -> ] Component Name
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #0 // BG2 Fixpack - Core Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #1 // BG2 Fixpack - Game Text Update
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #100 // Party Gets XP for Sending Keldorn to Reconcile With Maria
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #101 // Improved Spell Animations
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #102 // Cromwell's Forging Actually Takes a Day
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #103 // Mixed-Use Dagger Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #104 // Ghreyfain's Holy Symbol Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #105 // Additional Hero Quests in Trademeet Wait Until Hero is Officially Named
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #106 // Giants Receive Penalties When Attacking Halflings, Dwarves, and Gnomes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #107 // Remove Dual-Classing Restriction from Archers and Stalkers
~SETUP-NEJ2BIFFER.TP2~ #0 #0 // Biffing NeJv4.2 files. Run this INSTEAD OF Setup-NeJ2.exe! Run Setup-NeJ2.exe FIRST to uninstall!
~SETUP-NEJ2.TP2~ #0 #0 // Never Ending Journey v4.2 - Part 1
~SETUP-NEJ2.TP2~ #0 #1 // Continuous and Custom Kit Imoen
~SETUP-NEJ2.TP2~ #0 #2 // Priest of Sylvanus (Druid) Kit and Improved Character Jaheira.
~SETUP-NEJ2.TP2~ #0 #3 // Boo - Minsc?s Familiar
~SETUP-NEJ2.TP2~ #0 #4 // Improved Nymph (Woodland Being) Script by Goeran Rimen
~SETUP-NEJ2.TP2~ #0 #5 // Restored Twisted Rune Quest
~SETUP-NEJ2.TP2~ #0 #6 // Dual Wielding Fix for Rogues by aVENGER
~SETUP-NEJ2.TP2~ #0 #7 // Never Ending Journey v4.2 - Part 2
~SETUP-NEJ2.TP2~ #0 #8 // Melora NPC - Chaotic-Neutral Halfling Swashbuckler
~SETUP-NEJ2.TP2~ #0 #9 // Leina NPC - True-Neutral Half-Elf Bard Of Melody
~SETUP-NEJ2.TP2~ #0 #10 // Areas & Sounds
~SETUP-NEJGUI.TP2~ #0 #0 // GUI registrar for Never Ending Journey
~SETUP-NEJ2V602.TP2~ #0 #0 // Never Ending Journey v6.02 (cummulative patch)
~SETUP-NEJ2V602.TP2~ #0 #1 // New Imoen Portrait
~SETUP-NEJ2V602.TP2~ #0 #2 // Animations Compatibility Fix for "Tortured Souls"
~SETUP-SOS.TP2~ #0 #0 // Shadows Over Soubar, v1.11
~SETUP-SOS.TP2~ #0 #1 // Remorhaz walking speed adjustment (for ENGLISH version .EXE ONLY!!!)
~SETUP-TDD.TP2~ #0 #0 // The Darkest Day, v1.11
~SETUP-TDD.TP2~ #0 #1 // TDD Character Kits
~SETUP-CTB.TP2~ #0 #0 // Check The Bodies, v1.8
~SETUP-CTB-CHORES.TP2~ #0 #0 // Candlekeep Chores, v2.0
~SETUP-TS-BP.TP2~ #0 #0 // TORTURED SOULS v6.09 (BP Compatible Version)
~SETUP-ROT.TP2~ #0 #0 // Region Of Terror, v2.0
~SETUP-ROTUPDATE.TP2~ #0 #0 // Region of Terror - Fix #1
~SETUP-BGT.TP2~ #1 #0 // Baldur's Gate Trilogy - Core 1.01
~SETUP-BGTNEJ2.TP2~ #0 #0 // BGT-NeJ2 Compatibility Patch
~SETUP-BGTNEJ2.TP2~ #0 #1 // Custom Portraits For Imoen and Jaheira
~SETUP-BGTNEJ2.TP2~ #0 #2 // Boo - Minsc's Familiar Fixes
~SETUP-BGTNEJ2.TP2~ #0 #3 // Custom Firewalker Kit and continuity for Shar-Teel
~SETUP-BGTNEJ2.TP2~ #0 #4 // Merchant League Store
~SETUP-DSOTSC.TP2~ #0 #0 // DSotSC for BGT-Weidu v1.85 Mod
~SETUP-NTOTSC.TP2~ #0 #0 // NTotSC for BGT-Weidu v1.45 Mod
~SETUP-BONEHILL.TP2~ #0 #0 // Bone Hill Mod v2.05 (Requires BGT-Weidu or Tutu)
~SETUP-SIRINESCALL.TP2~ #0 #0 // The Lure of the Sirine's Call
~SETUP-UB.TP2~ #0 #0 // The Kidnapping of Boo by Cliffette
~SETUP-UB.TP2~ #0 #1 // The Suna Seni/Valygar Relationship
~SETUP-UB.TP2~ #0 #2 // Kalah and What He Was Promised
~SETUP-UB.TP2~ #0 #3 // "Cat and Mouse" (Bodhi hunts you in Spellhold) by Ghreyfain
~SETUP-UB.TP2~ #0 #4 // Gorje Hilldark and the Extended Illithium Quest
~SETUP-UB.TP2~ #0 #5 // The Pai'Na/Spider's Bane Quest
~SETUP-UB.TP2~ #0 #6 // Restored Crooked Crane Inn
~SETUP-UB.TP2~ #0 #7 // Restored Encounters
~SETUP-UB.TP2~ #0 #8 // Artemis Entreri in Bodhi's Lair
~SETUP-UB.TP2~ #0 #9 // Corrected "Xzar's Creations"
~SETUP-UB.TP2~ #0 #10 // Restored Hell Minions, by SimDing0
~SETUP-UB.TP2~ #0 #11 // Gorf the Squisher Fix, by Gebhard Blucher
~SETUP-UB.TP2~ #0 #12 // Item Restorations
~SETUP-UB.TP2~ #0 #16 // Corrected BAMs and Scripts
~SETUP-UB.TP2~ #0 #17 // Corrected Character Names and Biographies
~SETUP-UB.TP2~ #0 #18 // Restored Minor Dialogs
~SETUP-UB.TP2~ #0 #20 // Extended ToB Item Descriptions
~SETUP-UB.TP2~ #0 #21 // Throne of Bhaal Minor Restorations
~SETUP-UB.TP2~ #0 #24 // Sarevok's Remorse
~SETUP-BPV177.TP2~ #0 #0 // Big Picture AI/Enhancement Mod, version 177 weidu (beta)
~SETUP-BPV177.TP2~ #0 #1 // Improved Suldanessallar
~SETUP-BPV177.TP2~ #0 #2 // Improved Spellhold
~SETUP-BPV177.TP2~ #0 #3 // Wand of Orcus Add-In
~SETUP-BPV177.TP2~ #0 #4 // Improved Small Teeth Pass, by Kensai Ryu
~SETUP-BPV177.TP2~ #0 #5 // Improved Kangaxx Encounter, by Kensai Ryu
~SETUP-BPV177.TP2~ #0 #6 // Kensai Ryu's Improved Crypt King
~SETUP-BPV177.TP2~ #0 #7 // Kensai Ryu's Gnome Fighter/Illusionist in the Docks
~SETUP-BPV177.TP2~ #0 #8 // Improved Random Encounters, by Gebhard Blucher and Kensai Ryu
~SETUP-BPV177.TP2~ #0 #9 // Gebhard Blucher's Lich in the Docks
~SETUP-BPV177.TP2~ #0 #10 // Red Badge, Poison-Based Encounter, by Westley Weimer
~SETUP-BPV177.TP2~ #0 #11 // Kuroisan the Acid Kensai, by Westley Weimer
~SETUP-BPV177.TP2~ #0 #12 // The Ritual, by Westley Weimer
~SETUP-BPV177.TP2~ #0 #13 // Improved Xvart Village, for BGT-weidu
~SETUP-BPV177.TP2~ #0 #15 // Ascension for BP
~SETUP-BGTTWEAK.TP2~ #0 #0 // Eldoth reminds of Skie's ransom
~SETUP-BGTTWEAK.TP2~ #0 #1 // Angelo notices Shar-teel
~SETUP-BGTTWEAK.TP2~ #0 #2 // Finishable Kagain caravan quest
~SETUP-BGTTWEAK.TP2~ #0 #3 // Tougher Sarevok and Semaj
~SETUP-BGTTWEAK.TP2~ #0 #5 // Druid/Ranger-responsive bears in BG1
~SETUP-BGTTWEAK.TP2~ #0 #6 // Happy patch: NPCs cannot choose to leave the party
~SETUP-BGTTWEAK.TP2~ #0 #7 // Import more items into Shadows of Amn (WARNING: This can be considered a cheat)
~SETUP-BGTTWEAK.TP2~ #0 #9 // Random activated traps in the pirate cave -> Game-time randomisation
~SETUP-BGTTWEAK.TP2~ #0 #13 // Arkion reacts to player's reputation
~SETUP-BGTTWEAK.TP2~ #0 #14 // Coran responds to the death of a wyvern
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #40 // Change Viconia's Skin Color to Dark Blue
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #120 // Change Avatar When Wearing Robes or Armor (Galactygon)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1090 // Exotic Item Pack
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1130 // Reputation Resets in BG2 (BGT Only)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2150 // Wear Multiple Protection Items -> P&P Restrictions
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4031 // Consistent Stats: Edwin -> Use BG2 Values
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4041 // Consistent Stats: Jaheira -> Use BG2 Values
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4061 // Consistent Stats: Minsc -> Use BG2 Values
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4071 // Consistent Stats: Viconia -> Use BG2 Values
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4080 // Make Khalid a Fighter-Mage (Domi)
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #0 // Revised worldmap for the Baldur's Gate - including coloured Baldur's Gate map icons -> Installing new Worldmap for use with Mega Modification
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #3 // Clothmap style map for Throne of Bhaal
~SETUP-GUI.TP2~ #0 #9 // Game Graphical User Interface (GUI) -> "Baldur's Gate Trilogy" (Elminster wielding staff)"
~SETUP-XPMOD.TP2~ #0 #6 // Locks, Traps and Spells XP Reduction -> Reduce to 25%

I guess for time being I'll go without Nej2.

Installing BGTNEJ Compatibility patch shows the following warning:
WARNING: cannot find block matching [BGTNeJ2/compat/oAR0602.baf]

Firewalker kit component:
WARNING: cannot find block matching [BGTNeJ2/sharteel/scripts/oARAM00.baf]

merchant league component:
WARNING: cannot find block matching [BGTNeJ2/bank/rAR0602.BAF]

I guess it is safe to ignore these warnings (?)

Earlier in this topic an "error" during install like the following was reported:
This expression has a typo in the second part: Global("ForgeStuff","DD3314")

It was desclared a WEIDU problem ("purely cosmetic"), which should have been solved with V195. Well, it still there with this version. Can I still assume this "errors" are no errors ? TDD 1.11, ROT 2.0, Ctb 1.8, BGT 1.01, SOBH 205, DSOTSC 185 produce a lot of these lines. SOS 1.11, TS 6.09, NTOTSC 1.45 don't.