>>526
v4.2.2 でも同じでした.
catdump CATALOGS は以下のようになりました.

; 電子ブック/EPWING カタログ内容 (generated by catdump/Perl v1.4.4)

[Catalog]
FileName = CATALOGS
Type = EPWING3
Books = 6
BookSelect = 6

[Book]
BookType = 0003 (00:国語辞典, 03:EPWING3)
Title = "広辞苑 第四版"
Directory = "KOUJIEN"
InfoBlock = 0001
ZenGaiji = "GA16FULLGA24FULLGA30FULLGA48FULL"
HanGaiji = "GA16HALFGA24HALFGA30HALFGA48HALF"
BookFile = "HONMON"
Reserved1 = 002B002B

[Book]
BookType = 0001 (00:国語辞典, 01:EPWING1)
Title = "付属資料"
Directory = "FUROKU"
InfoBlock = 0001
ZenGaiji = "GA16FULLGA24FULLGA30FULLGA48FULL"
HanGaiji = "GA16HALFGA24HALFGA30HALFGA48HALF"