Not by me, I'm not that clever.  You can see who's done it in the credits at the bottom on the titancalc page.

That's probably where you've gone wrong.  It doesn't need to be in the folder itself. My TQVault is in My Documents\My Games.  It then accesses the info in the Titan Quest folder from there.

Small changelog v2.5

Fixed toggle item pick up
Fixed so stash increase button is disabled when its full size
Fixed so rare items will show when using filter dual magical
Added tag for relic
Improved dx11 stability

https://steamcommunity.com/app/475150/discussions/0/3264459260604185498/

Congratulations!    How did you find the expansion?

I don't know, maybe.  But it's not going to be high on their list of priorities atm.  They have a lot of bugs to sort out before they can look at doing other stuff.

Changelog for v2.4

Tech
Various stability fixes
Fixed fog of war not being displayed in Windows 7
Laptops with multiple graphic cards now better at selecting the best one
Added MSAA options for DX9, and FXAA for DX11
Added better error messages if hardware is not supported
Fixed cinematics in non-native resolutions
Cinematic volume is now correctly determined by Master Volume
Fixed loud sound when auto-sort combines lots of relics

Balance & gameplay
Tartarus reward chance now also depends on difficulty / loot quality
Fixed gold drops from Tartarus chests
Fixed Extra Relic suffix not appearing on items
Fixed low-level Aegipan Soldiers equipping too many MIs
Fixed Whirling Blades and Creeping Death Scroll functionality
Added proper cooldowns to new Scrolls
Ancestors received Ghost type and absorption/immunities, lowered HP in turn
Trimmed legendary chest loot tables in favor of more Atlantis items
Cut energy cost from Lasting Legacy
Tweaked Gadir merchant inventories
Fire Nova receives greater damage increases at high levels
Meteor Rain now does physical damage within a range, less burn
Changed Life Drain Cascade to fork to targets rather than arc
Fixed some new skills' sounds still being placeholders
Decreased health of Mosquitos, increased health of Lions
Balanced Giant's Tooth around giving Strength in %
Fixed DA being given as % on Freyja's torso armor
Increased Basilisk stun & confusion resistances
Potamoi mages may sometimes cast Spellbreaker
Tweaked names of chests/piles
Tweaked Tartarus' (boss) base level to reduce downscaling
Tartarus received 20% phys/pierce resistance
Adjusted damage values of new epic/legendary shields
Added missing stats to MI weapons

UI
Artifact formulas now correctly highlight items present (or not) in the relic vault
Added Shift+RMB function to use relics while Stash is open

Localization
Fixed various texts, especially German translations
Tweaked some item names

https://steamcommunity.com/app/475150/discussions/0/1648792788230630755/

Welcome to the game and to the forum.