I think he's talking about the HapLogCtrl.txt which needs to live in the root drive :
#################
##
# Haptek Logging Control File
#
# c:\HapLogCtrl.txt
#
# This file must be in c:\ and named "HapLogCtrl.txt".
# Otherwise it is ignored.
#
# log= <feature> <level> <filename root>
# Feature = one of
# HapApi2
# HapActiveX
# HapRendDX
# HapSoundMgr
# HapNetscape
#
# level = one of
# 0 - no logging
# 1 - logging to constant filenames (recommended to reduce disk usage)
# 2 - logging to time-stamped filenames (better for intense debugging)
#
# filename root = root of the filename. .txt and/or .log and timestamping may be pre/a-pended.
# if ommited, the feature name is used.
#
#
# logdirectory= c:\HaptekLogs
# Specifies the directory all the log files go into. The directory must exist.
#
# debugger= y/n
# special command used by Win32HaptekApi2 to open a pop-up debugger right away,
# useful for seeing which commands are being sent to the API.
#
#
#
# Examples
#
# log= hapapi2 1 my log file
# means log the hapapi2 features to c:\hapteklogs\my log file.txt
#
# log= hapapi2 2
# means log the hapapi2 features to c:\hapteklogs\<timestamp>_hapapi2.txt
#
# logdirectory= e:\my haptek logs
# log files will go in e:\my haptek logs
#
# debugger= y
# a debugger window will open immediately when the Win32HaptekApi2 starts up.
#
##
#################
logdirectory= c:\HaptekLogs
debugger= y
log= HapApi2 1
log= HapActiveX 0
log= HapRendDX 0
log= HapSoundMgr 0
log= HapNetscape 0