BTW, the known issue I mentioned in the release post is meanwhile fixed:
... we’ve just recently discovered a restriction of the ROMAlyzer / Collection Rebuilder in that it doesn’t support individual dumps that are larger than 2 GB. We know how to “fix” this, but the change is rather big, so it’s been postponed for after this release. I hope and think it will work in the next release, but that’s no promise. For now, if you’re using the ROMAlyzer / Collection Rebuilder to manage your ROMs, please use an exclude filter for “hapyfsh2”, which is the first and (so far) only set that’s blowing it up due to QByteArray’s 2 GB limitation (BT #142).
That is, sets like hapyfsh2 rebuild cleanly now (SVN latest)!