I started playing BG a while ago with the 1.05b patch _and_ the BGT v105b: transition patch v1. I finally played through all of BG and TotSC.

That's why I went to the palace, to talk to Belt and thus begin BGII. After the talk, the scene in the woods happens as it should, and the BGII intro movie is played. Now the first scene of BGII takes place, the party is in Irenicus dungeon. The PC is tortured with a spell and the bad guy teleports away.
And that's it. The game stays in this moment forever. I found several topics with similar problems, but nothing did really apply to my situation.
If anyone would have ideas to resolve this, it would be much appreciated.
Here's 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 [ : Version]
~SETUP-BGT.TP2~ #0 #0 // Baldur's Gate Trilogy - Core 1.05b
~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 #2 // Super Happy Fun Lucky Modder Pack
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #3 // BETA Core Fixes (please check the readme!)
~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 #106 // Giants Receive Penalties When Attacking Halflings, Dwarves, and Gnomes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #107 // Remove Dual-Classing Restriction from Archers and Stalkers
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #108 // Remove Second Attribute Bonus for Evil Path in Wrath Hell Trial
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #109 // Corrected Summoned Demon Behavior
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #110 // Additional Script Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #111 // Bard Song Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #112 // Wizard Slayers Cause Miscast Magic on Ranged Attacks
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #113 // Additional Alignment Fixes
~BG2FIXPACK/SETUP-BG2FIXPACK.TP2~ #0 #114 // Change Free Action to Protect Against Stun
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #10 // Remove Helmet Animations
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #20 // Change Imoen's Avatar to Mage
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #30 // Change Nalia's Avatar to Thief
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #40 // Change Viconia's Skin Color to Dark Blue
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #50 // Avatar Morphing Script
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #60 // Weapon Animation Tweaks
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #70 // Icewind Dale Casting Graphics (Andyr)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #80 // Restore SoA Load Screen Logo (ToB Only)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #90 // Disable Portrait Icons Added by Equipped Items
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #100 // Commoners Use Drab Colors
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #110 // Icon Improvements
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #120 // Change Avatar When Wearing Robes or Armor (Galactygon)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #130 // Force All Dialogue to Pause Game
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1010 // More Interjections
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1020 // Alter HP Triggers for NPC Wounded Dialogues
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1030 // Reveal Wilderness Areas Before Chapter Six
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1036 // Make Cloakwood Areas Available Before Completing the Bandit Camp -> All of Cloakwood Except the Mines
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1040 // Improved Athkatlan City Guard
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1050 // Gradual Drow Item Disintegration
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1070 // Improved Multi-Player Kick-out Dialogues
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1080 // Add Bags of Holding
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1090 // Exotic Item Pack
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1120 // Stores Sell Higher Stacks of Items
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1130 // Reputation Resets in BG2 (BGT Only)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1140 // Gems and Potions Require Identification
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1150 // Shapeshifter Rebalancing
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1160 // Multiple Strongholds (Baldurdash) -> No Restrictions (Baldurdash)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1170 // Bonus Merchants (Baldurdash)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1180 // Female Edwina
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1210 // Use BG Walking Speeds (BETA)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #1220 // Allow Cromwell to Upgrade Watcher's Keep Items
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2020 // Two-Handed Bastard Swords
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2030 // Two-Handed Katanas
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2040 // Universal Clubs
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2050 // Description Updates for Universal Clubs Component
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2060 // Weapon Styles for All
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2080 // Delay High Level Abilities
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2090 // Change Experience Point Cap -> Remove Experience Cap
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2100 // Allow Thieving and Stealth in Heavy Armor
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2120 // Allow Arcane Spellcasting in Heavy Armor
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2140 // Expanded Dual-Class Options
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2151 // Wear Multiple Protection Items -> No Restrictions
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2160 // Alter Weapon Proficiency System -> Rebalanced Weapon Proficiencies
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2170 // Cast Spells from Scrolls (and Other Items) at Character Level
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2192 // Limit Ability of Storekeepers to Identify Items -> Hybrid of Both Methods
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2200 // Multi-Class Grandmastery (Weimer)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2210 // True Grandmastery (Baldurdash)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2240 // Un-Nerfed THAC0 Table
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2250 // Un-Nerfed Sorcerer Spell Progression Table
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2260 // Alter Mage Spell Progression Table -> Un-Nerfed Table (Blucher)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2270 // Alter Bard Spell Progression Table -> Un-Nerfed Table (Blucher)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2280 // Alter Cleric Spell Progression Table -> Un-Nerfed Table (Blucher)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2296 // Alter Druid Spell and Level Progression Tables -> Use Cleric Level Progression Changes With Un-Nerfed Cleric Spell Table (Blucher)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2300 // Triple-Class HLA Tables
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2312 // Add Save Penalties for Spells Cast by High-Level Casters (BETA) -> Arcane & Divine Magic
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2320 // Trap Cap Removal (Ardanis/GeN1e)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2330 // Remove Delay for Magical Traps (Ardanis/GeN1e)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #2340 // Remove Summoning Cap for Celestials (Ardanis/GeN1e)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3000 // Higher HP on Level Up -> Maximum
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3010 // Maximum HP for NPCs (the bigg) -> For All Creatures in Game
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3020 // Identify All Items
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3031 // Easy Spell Learning -> 100% Learn Spells and No Maximum Cap
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3040 // Make Bags of Holding Bottomless
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3050 // Remove fatigue from restoration spells
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3060 // Remove "You Must Gather Your Party..." Sound (Weimer)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3080 // Unlimited Ammo Stacking
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3090 // Unlimited Gem and Jewelry Stacking
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3100 // Unlimited Potion Stacking
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3110 // Unlimited Scroll Stacking
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3121 // Happy Patch (Party NPCs do not fight or complain about reputation) -> NPCs can be angry about reputation but never leave (Salk)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3125 // Neutral Characters Make Happy Comments at Mid-Range Reputation
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3130 // No Traps or Locks (Weimer)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3141 // Faster Chapter 1&2 Cut-Scenes and Dreams -> Non-Silly Version
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3150 // Turn Off The Hideous Cloak-of-Mirroring, Spell-Trap, and Physical Mirror Animations
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3160 // Keep Drizzt's Loot, Disable Malchor Harpell
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3170 // No Drow Avatars On Party In Underdark
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3183 // Romance Cheats
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3190 // Rest Anywhere (Japheth)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3200 // Sellable Items (Icelus)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #3210 // Minimum Stats Cheat
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4000 // Adjust Evil joinable NPC reaction rolls
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4010 // Improved Fate Spirit Summoning
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4020 // ToB-Style NPCs
~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 #4050 // Change Jaheira to Neutral Good
~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)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4090 // Make Montaron an Assassin (Andyr)
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4100 // Change Korgan to Neutral Evil
~BG2_TWEAKS/SETUP-BG2_TWEAKS.TP2~ #0 #4110 // Give Kagain A Legal Constitution Score of 19
// Recently Uninstalled: ~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #0 // Worldmap for Baldur's Gate v7.0 - including colored Baldur's Gate map icons -> New Worldmap for use with Mega Modification...
// Recently Uninstalled: ~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #2 // Worldmap for Throne of Bhall -> Use new Worldmap for Throne of Bhaal as well
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #0 // Worldmap for Baldur's Gate v7.0 - including colored Baldur's Gate map icons -> New Worldmap for use with Mega Modification...
~SETUP-BP-BGT-WORLDMAP.TP2~ #0 #2 // Worldmap for Throne of Bhall -> Use new Worldmap for Throne of Bhaal as well
~WIDESCREEN/WIDESCREEN.TP2~ #0 #0 // Widescreen Mod: Widescreen Mod v1
~SETUP-BGT105BPATCH.TP2~ #0 #0 // BGT v105b: transition patch v1