error on: image create photo -data

I am working with ActiveState Tcl/Tk 8.5.7. I tried Linux tclkit x86-Version 8.5.1 and Version 8.5.7 from http://www.patthoyts.tk/tclkit/linux-ix86/

There is an error when tclkit meets the following source code line:

set ::gorilla::images(application) [image create photo -data " base64 data ... "]

tclkit's message:

$ tclkit gorilla15alpha.kit invalid command name "image"

    while executing

"image create photo -data " R0lGODlhEAAQAMZxAF4qAl4rAWAtAmEuBmMvAWQwAGIwCmMxCmU0DWk4DGs5DW87AGw7DXA8AW88 BGw8EGw8EnFADnFCHHdFD3dGDn1JA3ZJIX9MBX1ND4VRBI..."

wish 8.5 does not complain and is showing the icon without problems.

Any idea?

thank you