I just compiled insight package on arch linux perfectly and when i try to run the software, i get the following error.
1. i get the same error while using tk8.4 and tcl8.4
2. then i upgraded to tk8.6 and tcl8.6 using pacman, and i still get the same error, even if i correctly set TK/TCL_LIBRARY paths.

why do i always get these errors.
somebody on #archlinux told me that there is an error in xorg and tk , but i don't know what. can anybody help.
X.Org X Server 1.5.3
Release Date: 5 November 2008
X Protocol Version 11, Revision 0
Build Operating System: Linux 2.6.27-ARCH i686
Current Operating System: Linux myhost 2.6.27-ARCH #1 SMP PREEMPT Mon Dec 8 22:01:01 UTC 2008 i686
Build Date: 17 December 2008 08:20:05PM

Tk_Init failed: Can't find a usable tk.tcl in the following directories:
/usr/local/share/tk8.4 /usr/local/lib/tk8.4 /usr/lib/tk8.4 /usr/local/library /usr/library /usr/tk8.4.1/library /tk8.4.1/library

/usr/local/share/tk8.4/tk.tcl: no event type or button # or keysym
no event type or button # or keysym
while executing
"bind Listbox <MouseWheel> {
%W yview scroll [expr {- (%D / 120) * 4}] units
(file "/usr/local/share/tk8.4/listbox.tcl" line 182)
invoked from within
"source /usr/local/share/tk8.4/listbox.tcl"
(in namespace eval "::" script line 1)
invoked from within
"namespace eval :: [list source [file join $::tk_library $file.tcl]]"
(procedure "SourceLibFile" line 2)
invoked from within
"SourceLibFile listbox"
(in namespace eval "::tk" script line 4)
invoked from within
"namespace eval ::tk {
SourceLibFile button
SourceLibFile entry
SourceLibFile listbox
SourceLibFile menu
SourceLibFile panedwindow
SourceLibFile ..."
invoked from within
"if {$::tk_library ne ""} {
if {[string equal $tcl_platform(platform) "macintosh"]} {
proc ::tk::SourceLibFile {file} {
if {[catch {
(file "/usr/local/share/tk8.4/tk.tcl" line 393)
invoked from within
"source /usr/local/share/tk8.4/tk.tcl"
("uplevel" body line 1)
invoked from within
"uplevel #0 [list source $file]"

This probably means that tk wasn't installed properly.