Glaurung 2 Epsilon/4 not using book

[zullil]

I modified the code and recompiled. However ...

uci
id name Glaurung 2-epsilon/4
id author Tord Romstad
option name Hash type spin default 32 min 4 max 1024
option name Ponder type check default true
option name OwnBook type check default true
option name UCI_ShowCurrLine type check default false
option name UCI_Chess960 type check default false
option name UCI_EngineAbout type string default Glaurung by Tord Romstad, see http://www.glaurungchess.com
option name Threads type spin default 1 min 1 max 4
uciok
setoption name OwnBook value true
isready
readyok
ucinewgame
isready
readyok
position startpos moves e2e4
go wtime 61000 btime 61000 winc 1000 binc 1000
info depth 2
info depth 2 score cp -9 time 15 nodes 89 nps 5933 pv g8f6 b1c3
info depth 3
info depth 3 score cp 33 time 22 nodes 242 nps 11000 pv g8f6 b1c3 b8c6
info depth 4
info depth 4 score cp -7 time 22 nodes 535 nps 24318 pv g8f6 b1c3 b8c6 g1f3
info depth 5
info depth 5 score cp -5 time 23 nodes 1041 nps 45260 pv g8f6 b1c3 b8c6 g1f3 d7d6
info depth 6
info depth 6 score cp -19 time 26 nodes 3013 nps 115884 pv g8f6 b1c3 b8c6 g1f3 d7d6 d2d4

[zullil]

Well, maybe my book.bin was corrupted? I downloaded performance.bin again, renamed it book.bin, and stuck in the directory with my glaurung binary. (This is the binary compiled from the original source, without the modification to book.cpp suggested by Tord.) Now all is well:

uci
id name Glaurung 2-epsilon/4
id author Tord Romstad
option name Hash type spin default 32 min 4 max 1024
option name Ponder type check default true
option name OwnBook type check default true
option name UCI_ShowCurrLine type check default false
option name UCI_Chess960 type check default false
option name UCI_EngineAbout type string default Glaurung by Tord Romstad, see http://www.glaurungchess.com
option name Threads type spin default 1 min 1 max 4
uciok
setoption name OwnBook value true
isready
readyok
ucinewgame
isready
readyok
position startpos moves e2e4
go wtime 61000 btime 61000 winc 1000 binc 1000
bestmove c7c5


Sorry for contributing to this puzzle!