Package version conflicts with Tclkit 8.5 and SDX

1. Using tclkit-darwin-univ-aqua 8.5.0 with SDX (version: 2007/04/08 18:29:47 31669-75130), I receive the following error when I enter "tclkit sdx.kit fetch" at the command line:

attempt to provide package FTP 1.2 failed: package FTP 1097 provided instead

    ("package ifneeded FTP 1.2" script)
    invoked from within

"package require FTP"

    (file "/usr/local/bin/sdx.kit/lib/app-sdx/fetch.tcl" line 5)
    invoked from within

"source /usr/local/bin/sdx.kit/lib/app-sdx/fetch.tcl"

    ("uplevel" body line 1)
    invoked from within

"uplevel #0 [list source [file join $b $a.tcl]"

    (procedure "run_sdx" line 17)
    invoked from within

"run_sdx"

    (file "/usr/local/bin/sdx.kit/lib/app-sdx/sdx.tcl" line 59)
    invoked from within

"source /usr/local/bin/sdx.kit/lib/app-sdx/sdx.tcl"

    ("package ifneeded app-sdx 2.0" script)
    invoked from within

"package require app-sdx"

    (file "/usr/local/bin/sdx.kit/main.tcl" line 8)
    invoked from within

"source /usr/local/bin/sdx.kit/main.tcl"

    ("uplevel" body line 1)
    invoked from within

"uplevel [list source [file join $self main.tcl]"

Whereas the same command with tclkit-darwin-univ-aqua 8.4.17 prints the following prompt, as expected:

Usage: fetch url file ?chunksize?

1. If I invoke tclkit-darwin-univ-aqua 8.5.0 in the same directory as sdx.kit and issue the following commands (where % is the interactive prompt),

% source sdx.kit % package require sdx % sdx::sdx fetch

I see this error message:

attempt to provide package vfs 1.2 failed: package vfs 1.3 provided instead

rather than the prompt and error message seen as expected with 8.4.17, which is:

Usage: fetch url file ?chunksize? sdx slave interpreter exited abnormally: 1

I am uncertain how or whether to apply the "package ifneeded..." workaround given at http://wiki.tcl.tk/Tclkit.