I don't know if these apply to you:

if your canvas are being created/saved with a wrong symbol as symbol, it might cause them to have some bugs. looking at the text file of the patch makes it clear, where one symbol should be, there are several now (in case you turned a list with spaces into a symbol). then the following numbers aren't read in the proper order.

changing gui properties through messages (or even the window) doesn't make the patch dirty, so you will need to include the save process in your patch. I think there was an external that sent a bang when the patch was closed, that could be used for it.

Ah, now I figured out how to work around it:
I was sending

[loadbang]
|
[symbol <stuff>]
|
[mycanvas label $1(

to it, and, apparently, after setting the label, the problem appears.
I suppressed the loadbang, and could then edit and save the canvas happily.
strange...
Tim


2012/5/24 tim vets <timvets@gmail.com>

when I put a canvas in my patch and I want to open the properties to
change size/color/label...,
I get no properties window but:

(Tcl) UNHANDLED ERROR: wrong # args: should be "pdtk_iemgui_dialog
mytoplevel mainheader dim_header wdt min_wdt wdt_label hgt min_hgt
hgt_label rng_header min_rng min_rng_label max_rng max_rng_label rng_sched
lin0_log1 lilo0_label lilo1_label loadbang steady num_label num snd rcv
gui_name gn_dx gn_dy gn_f gn_fs bcol fcol lcol"
   while executing
"pdtk_iemgui_dialog .gfxstuba5f4d60 |cnv|
------selectable_dimensions(pix):------ 15 1 size: 0.0 0.0
empty             ------visible_rectan..."
   ("uplevel" body line 1)
   invoked from within
"uplevel #0 $cmds_from_pd"

It is still possible to change the size by sending vis_size $1 $2 to its
receiver,
but the change doesn't get saved into the patch.
this applies to only one of several subpatches in the main patch.

any ideas?
gr,
Tim

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