Any ideas on what this means in my patch?

bad window path name ".x1077aafa0.c"
bad window path name ".x1077aafa0.c"
while executing
"winfo toplevel $tkcanvas"
(procedure "::pdtk_canvas::pdtk_canvas_getscroll" line 2)
invoked from within
"::pdtk_canvas::pdtk_canvas_getscroll .x1077aafa0.c"
("after" script)

@raynovich Unless you were trying to do something clever with tcl/tk it is probably the 0.49 GOP window bug detailed here...... https://www.mail-archive.com/pd-list@lists.iem.at/msg18345.html and here..... https://github.com/pure-data/pure-data/issues/578#issuecomment-501293126
The message means that the window is not found when Pd queries it with the OS window manager.
It looks like there is some fix (second link), and that it is fixed in 0.50.
David.

Thank you. Downloaded Pd 0.50-0