Doomsday Engine

hello, it is me again with a new bug report.
When I run :/usr/local/bin/doomsday -game jhexen
-basedir /usr/local/share/deng/ -v - on my Linux PC i
get such message:

LoadPlugin: /usr/local/lib/libdpdehread
LoadPlugin: /usr/local/lib/libdpmapload
Con_Init: Initializing the console.
SW_Init: Startup message window opened.
Executable: Version 1.8.1-rc2 Aug 1 2004 (DGL).
Memory zone: 32.0 Mb.
Command line (6 strings):
0: /usr/local/bin/doomsday
1: game
2: jhexen
3: -basedir
4: /usr/local/share/deng/
5: -v
R_SetDataPath: Data/
Zip_Init: Initializing package system...
R_SetDataPath: Data/jHexen/
Parsing configuration files.
W_Init: Init WADfiles.
-- No IWAD has been specified! Important data might be
missing. Are you sure you want to continu
ERROR Zip_Init: Initializing package system...
R_SetDataPath: Data/jHexen/
Parsing configuration files.
W_Init: Init WADfiles.

W_CheckIWAD: Init aborted.

I use Slackware linux.

thenks