[GRASSLIST:4966] problem starting tcltk for Grass53 under Cygwin

[lawrence moran]

Hi,
 
I've just installed the software on an XP machine- all is fine except I can't start the tcltk interface.
Get the following error message:
 
>Application initialization failed: no display name and no $DISPLAY environment variable
Error in startup script: invalid name "bind" 
while executing 
"bing balloon <ENTER> {
set balloonHelp(%W,after) [after 400 {updateBalloonHelp %W}]
}
(procedure "BalloonInit" line 2)
invoked from within
"BalloonInit"
(file "/usr/local/grass53/tcltkgrass/main/gui.tcl" line 1677)
invoked from within
"source $env (TCLTKGRASSBASE)/main/gui.tcl"
invoked from within
"if [catch {source $env(TCLTKGRASSBASE)/main/gui.tcl}] {
set env(TCLTKGRASSBASE) $env(GISBASE)/tcltkgrass
source $env(TCLTKGRASSBASE)/main/gui...."
(file "/usr/local/grass53/bin/tcltkgrass" line 26)
 
Any ideas?
 
Thanks in anticipation...
 
Lawrence
 
ps. how can I cut and paste such error messages- I had to copy this one out myself!