[hcs/colorpanel] returns error

I can successfully load [hcs/colorpanel]. However, if I send a bang to it it returns the following error in the message window and doesn't load

legacy tcl command at 104 of colorpanel.c: eval [read [open {/opt/purr-data/lib/pd-l2ork/extra/hcs/colorpanel.tcl}]]
[list2symbol] part of zexy-2.2.6 (compiled May  8 2019)
	Copyright (c) 1999-2012 IOhannes m zmölnig, forum::für::umläute & IEM
[2] legacy tcl command at 19 of colorpanel.c: after idle [list after 100 ::hcs::colorpanel::open #556c2e9ba350 #ffffff]