Synfig Studio 1.0 - Release Candidate #1 - errors

I try Synfig Studio 1.0 - Release Candidate #1 I got this errors :

   synfig studio -- starting up application...


(synfigstudio.exe:7576): Gtk-WARNING **: GtkSettings Cursor Theme: Unsupported G
DK backend

synfig(7576) [2:30:04 PM] info: Loading modules from C:\Program Files\Synfig\etc
\synfig_modules.cfg
synfig(7576) [2:30:08 PM] info: Loading plugins from C:\Program Files\Synfig\sha
re\synfig\plugins
synfig(7576) [2:30:08 PM] info:    Loading plugin: add-skeleton-simple
synfig(7576) [2:30:08 PM] info:    Loading plugin: view-unhide-all-layers
synfig(7576) [2:30:08 PM] info: Loading plugins from C:\Users\catalin\Synfig\plu
gins

(synfigstudio.exe:7576): Gtk-CRITICAL **: _gtk_accel_group_attach: assertion 'g_
slist_find (accel_group->priv->acceleratables, object) == NULL' failed

(synfigstudio.exe:7576): gtkmm-WARNING **: gtkmm: Attempt to call Gtk::manage()
on a Gtk::Window, but a Gtk::Window has no parent container to manage its lifeti
me.


(synfigstudio.exe:7576): Gdk-CRITICAL **: gdk_device_get_n_axes: assertion 'gdk_
device_get_source (device) != GDK_SOURCE_KEYBOARD' failed

(synfigstudio.exe:7576): Gdk-CRITICAL **: gdk_device_get_n_axes: assertion 'gdk_
device_get_source (device) != GDK_SOURCE_KEYBOARD' failed

(synfigstudio.exe:7576): gtkmm-WARNING **: gtkmm: Attempt to call Gtk::manage()
on a Gtk::Window, but a Gtk::Window has no parent container to manage its lifeti
me.


(synfigstudio.exe:7576): GLib-GObject-WARNING **: value "3.000000" of type 'gflo
at' is invalid or out of range for property 'yalign' of type 'gfloat'

(synfigstudio.exe:7576): Gtk-WARNING **: Cannot connect attribute `canvas' for c
ell renderer class `gtkmm__CustomObject_N6studio22CellRenderer_TimeTrackE' since
 `canvas' is already attributed to column 6

(synfigstudio.exe:7576): Gtk-WARNING **: Cannot connect attribute `canvas' for c
ell renderer class `gtkmm__CustomObject_N6studio22CellRenderer_TimeTrackE' since
 `canvas' is already attributed to column 6

hello and welcome here,

thank’s to report, i have kind of same output also under linux…

but does the app “normally” start after that output ?
are you able to play with ?