I am still fighting with this: if I point to a Tcl installation different to the ActivePerl Tkkit.dll, I get an error message:

 
#!/usr/bin/perl
BEGIN {
    #my $frameworkpath = "C:/tkkit.dll";#If I use this, it works
    my $frameworkpath = "C:/ActiveTcl/bin/tk86t.dll";
    print $ENV{'PERL_TCL_DL_PATH'} = $frameworkpath;
}

use strict;
use warnings;
use Tcl::pTk;
my $int = new Tcl::pTk;
$int->Eval(<<'EOS');
# pure-tcl code to create widgets (e.g. generated by some GUI builder)
text .e
## http://wiki.tcl.tk/1626#tk_version
.e insert end "tcl_version      $tcl_version\n"
.e insert end "tcl_patchLevel   $tcl_patchLevel\n"
.e insert end "tk_version       $tk_version\n"
.e insert end "tk_patchLevel    $tk_patchLevel\n"
.e insert end "tk_library       $tk_library\n"
pack .e
EOS
my $e = $int->widget('.e');     # get .e entry into play
$e->insert( "end", "
Tcl::pTk $Tcl::pTk::VERSION
Tcl $Tcl::VERSION
\$^V $^V
\$] $]
");
$int->MainLoop;
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Error:

NpLoadLibrary: could not find Tcl library at 'C:/ActiveTcl/bin/tk86t.d
+ll' at C:/Perl/site/lib/XSLoader.pm line 114.
Failed to load Tcl dll! at C:/Perl/site/lib/XSLoader.pm line 114.
Unable to initialize Tcl at C:/Perl/site/lib/XSLoader.pm line 114.
Compilation failed in require at C:/Perl/site/lib/Tcl/pTk.pm line 6.
BEGIN failed--compilation aborted at C:/Perl/site/lib/Tcl/pTk.pm line 
+6.
Compilation failed in require at .\tclVersion.pl line 10.
BEGIN failed--compilation aborted at .\tclVersion.pl line 10.
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What am I doing wrong?