[ns] Modified NS-2 works under GDB but not if outside gdb

Hi,

I have a modified ns-2.34 however it appears that the modified code only
works when inside gdb and not outside gdb.

The modified code contains new tcl commands (in Mac802_11::command) with
added command "client." When outside gdb, I get this error:

client lookup failed

(_o62 cmd line 1)
invoked from within
"_o62 cmd client 1"
invoked from within
"catch "$self cmd $args" ret"
invoked from within
"if [catch "$self cmd $args" ret] {
set cls [$self info class]
global errorInfo
set savedInfo $errorInfo
error "error when calling class $cls: $args" $..."
(procedure "_o62" line 2)
(SplitObject unknown line 2)
invoked from within
"$mac([expr $k+1]) client 1"
("for" body line 6)
invoked from within
"for {set k 0} {$k < $opt(nn)} {incr k} {
set node_($k) [ $ns_ node [lindex $temp \
[expr $k+1]] ]
$node_($k) base-station [AddrParams add..."
(file "wifi-exp-psm.tcl" line 144)

What could be wrong?

--
Carlo Santos