Error during SESSION activate. I got the message <br/>invalid command name "::request::global" 
<pre>can't read "dir": no such variable
    while executing
"file join $dir combobox.tcl"
    (in namespace eval "::request" script line 3)
    invoked from within
"namespace eval ::request $script"
    ("::try" body line 12)<hr/><p>OUTPUT BUFFER:</p>
package ifneeded combobox 2.3 \
    [list source [file join $dir combobox.tcl]]

</pre>