Great tool, but I found a few issues.

I verified my collection via RomCenter using no-intro and a few other dats.


There's one rom in my collection that is being incorrectly labeled as Europe in this tool:
0150 - Mega Man Battle Network 5 - Double Team DS (US)


As well, many have the wrong CRC in the DB (they show up in _unknown):
2609 - Harvest Moon DS - Island of Happiness (US) [CC67E8F9].nds
2696 - Kirby - Super Star Ultra (US) [DBAC8944].nds
2794 - Sonic Chronicles - The Dark Brotherhood (US) [3E3F7FBE].nds
2809 - Castlevania - Order of Ecclesia (US) [A7612D61].nds
2875 - Dragon Ball - Origins (US) [465F9144].nds
2978 - Luminous Arc 2 (US) [561E459D].nds
2979 - Rune Factory 2 - A Fantasy Harvest Moon (US) [75B65AFD].nds
3055 - Chrono Trigger (US) [B3836946].nds
3398 - Fire Emblem - Shadow Dragon (US) [FED8157C].nds
3424 - Dragon Quest V - Hand of the Heavenly Bride (US) [6F455159].nds
3430 - Bomberman 2 (EU) [26B0BBA3].nds
3517 - Grand Theft Auto - Chinatown Wars (US) [CC50CF7E].nds
3574 - Final Fantasy Crystal Chronicles - Echoes of Time (US) [86C071F1].nds
3593 - Suikoden - Tierkreis (US) [27335679].nds
3776 - Broken Sword - Shadow of the Templars - The Director's Cut (US) [43DF3C0B].nds
3902 - Shin Megami Tensei - Devil Survivor (US) [B771BBC4].nds
3930 - Megaman Star Force 3 - Red Joker (US) [8714A7F5].nds
3931 - Megaman Star Force 3 - Black Ace (US) [76B76DC6].nds
4225 - Kingdom Hearts - 358-2 Days (US) [CD0E9477].nds
4439 - Harvest Moon DS - Sunshine Islands (US) [64BC246B].nds
4527 - Legend of Zelda - Spirit Tracks, The (US) [38392357].nds
4564 - Dragon Ball Z - Attack of the Saiyans (US) [A9F0B8F9].nds
4765 - Sonic Classic Collection (DSi Enhanced) (US) [7344DF65].nds
4787 - Pokemon - HeartGold Version (US) [C180A0E9].nds
5265 - Lufia - Curse of the Sinistrals (US) [CAC43A4E].nds
5356 - Nine Hours, Nine Persons, Nine Doors (US) [D7F85F15].nds
5473 - Kingdom Hearts - Re-Coded (US) [28ACD394].nds
5584 - Pokemon - White Version (DSi Enhanced)(Europe) (US) [B552501C].nds
5585 - Pokemon - Black Version (DSi Enhanced)(Europe) (US) [4F6E5580].nds
6149 - Pokemon - Black Version 2 (DSi Enhanced)(Europe) (US) [D4427FD1].nds
6150 - Pokemon - White Version 2 (DSi Enhanced)(Europe) (US) [777EB04F].nds
6526 - Mario vs. Donkey Kong - Mini-Land Mayhem! (v02)(DSi Enhanced) (US) [17989FE4].nds