Here is romcenter 3.00 beta 2. This version is stable and afaik, no more bugs are known. If you find some more, please post a message in the forum.
A lot of tests have been done with mame, as we can find almost all types of roms in the mame list.
Next version will focus on datafiles which support plugins, and the new datafile format support.
No more important features will be added until the final version.

Due to the ´size´ field update to support large files (> 2GB), you can´t update your old databases. Sorry.

:arrow: Bugs fixed:
- Bios roms not used in any games (awbios...) are removed in bios merge/unmerge mode
- Bios roms sometimes deleted
- Miss/have message text wrong in txt file
- Abort if disk is full
- "String truncation" error
- "Unknown error 12"
- Two dll added (needed on some systems)
- "conversion error" during samples fix
- "File exists in disk, but not in db" error during samples fix
- Error when moving some roms outside sample path
- Can´t select ´backup folder´ in parameters form when ´recycle bin´ is checked.
- "Invalid variant operator" during fix
- "remove roms to recycle" option not saved
- "file not found" when fixing some CHD
- "existing file" when moving some samples files
- "file not found" when moving some samples roms
- Problems in file identification
- Db migration fails to import roms and files in some cases
- "Index out of bound" when loading chd folder with empty zip
- Empty listview sometimes after fast scrolling
- Folder date not always reported to db
- Filters button status not correct after db loading
- Many small fix to address specific roms problems

:arrow: Features added:
- Sample processing rewritten
- Icons in option form
- Report roms/bios/sample modes in log
- Standalone installation (just unzip)
- Added possility to set "datapath = ." in startup.ini
- Datutil 2.34
- Right arrow = dble click in left view
- Dble click on right view= play game
- Add the last part of folder name before filenames in log
- Improve duplicate detection in sample path
- Create settings path structure when not found
- Switch sample mode from split to merge when removing sample path
- Clean db menu : export and import db. This clean and compact database
- Auto sweep database
- Remove path icon in left view when path is not available
- Move all "size" info to 64 bits to handle files and roms > 2GB (unfortunatly, zip dll doesn´t support >2GB files yet)
- Faster roms display
- Listview update temporization when browsing with keyboard (-> faster browsing)
- Display log messages in status bar when log window is hidden
- Error detection during db export
- "Backup folder" size and nbfiles removed (too long for big folders)