I'm using ChessBase 10 on CrossOver/macOS, and the ChessBase file is not very well behaved. The links in the Text work, but the links in the theoretical section don't work. Too bad, it looks like GM Emms put a lot of work into these links...
Edited: I wasn't using the game links correctly. Instead of clicking on the icon, I needed to click on the move just before the icon. Then Ctrl+Enter opens the linked game in ChessBase 10.
Anyway I work in PGN, so I wanted to replace the Text. There are 25 lines in the theoretical section, I put only the beginning moves into a PGN game as a substitute for the Text. Copied here in case anyone else is interested, also see the attachment for the same game.
1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 {DIAGRAM}
6. e4 (
6. Nf3 g6 7. g3 (7. Bf4 Bg7 {3 Benoni - 6 Nf3 g6 7 Bf4 Bg7 & others (A61)}
(7... a6 {2 Benoni - 6 Nf3 g6 7 Bf4 a6 (A61)}))
(7. Nd2 {4 Knight's Tour Variation - 6 Nf3 g6 7 Nd2 (A61)})
(7. h3 {5 Benoni - 6 Nf3 g6 7 h3 & others (A61)})
7... Bg7 8. Bg2 O-O 9. O-O a6 (9... Na6 {6 Benoni Fianchetto - 9...Na6 (A62)})
(9... Re8 {7 Benoni Fianchetto - 9...Re8 (A62)})
10. a4 Nbd7 {8 Benoni Fianchetto - 9...a6 10 a4 Nbd7 intro (A63)}
11. Nd2 {9 Benoni Fianchetto - 11 Nd2 Main Line (A64)})
6... g6 {10 Benoni: 6e4 g6 Intro - (A65)}
7. Nf3 (7. Nge2 {11 Benoni: 6 e4 g6 7 Nge2 - (A65)})
(7. f4 Bg7 8. Bb5+
(8. e5 {12 Benoni: Mikenas Attack - 6 e4 g6 7 f4 Bg7 8 e5!? (A66)})
8... Nfd7 {14 Benoni: Flick-Knife Attack - 8 Bb5+ Nfd7 (A67)}
(8... Nbd7 {13 Benoni: Flick-Knife Attack - 8 Bb5+ Nbd7/Bd7 (A67)}))
7... Bg7 (7... a6 {15 Benoni - 6 e4 g6 7 Nf3 a6 intro (A70)}
8. a4 {17 Benoni - 6 e4 g6 7 Nf3 a6 8 a4 (A70)}
(8. Bf4 {16 Benoni - 6 e4 g6 7 Nf3 a6 8 Bf4 (A70)}))
8. Be2 (
8. h3 O-O 9. Bd3 b5 (9... Nbd7 {18 Benoni: Modern Classical - Early moves and 9 Bd3 Nbd7 (A70)})
(9... a6 {19 Benoni: Modern Classical - 9 Bd3 a6 (A70)})
10. Nxb5 {21 Benoni: Modern Classical - 9 Bd3 b5 10 Nxb5 (A70)}
(10. Bxb5 {20 Benoni: Modern Classical - 9 Bd3 b5 intro and 10 Bxb5 (A70)}))
8... O-O
9. O-O Re8 (9... Na6 {22 Benoni: Old Classical - 9...Na6 and others (A73)})
(9... a6 10. a4 Bg4 {23 Benoni: Old Classical - 9...a6 10 a4 Bg4 (A75)})
10. Nd2 Na6 {25 Benoni: Old Classical - 9...Re8 10 Nd2 Na6 (A78)}
(10... Nbd7 {24 Benoni: Old Classical - 9...Re8 10 Nd2 Nbd7 (A77)})
11. f3 {26 Benoni: Old Classical - 9...Re8 10 Nd2 Na6 11 f3 (A79)}