[lazarus] Error open my project

[Andrew Velikoredchanin]

I create sample poject: main form and TNotebook in form. I create 3 
TPage and place controls on pages. Press icon "Save All" and exit from 
lazarus. After this I run lazarus and see errors: "Unable to build form 
from file .../unit1.lfm" in window and errorc in console:
=========================================================================
NOTE: editor options config file not found
TPascalParserTool.BuildTree B OnlyIntf=TRUE  
/root/lazarus/clcd-install/unit1.pas
Gtk-CRITICAL **: file gtkstyle.c: line 515 (gtk_style_attach): assertion 
`window != NULL' failed.
Gdk-CRITICAL **: file gdkwindow.c: line 1777 (gdk_window_get_events): 
assertion `window != NULL' failed.
Gdk-CRITICAL **: file gdkwindow.c: line 1804 (gdk_window_set_events): 
assertion `window != NULL' failed.
[TJITForms.AddJITFormFromStream] ERROR reading form stream of Class 
'TfrmMain'
Gtk-CRITICAL **: file gtkstyle.c: line 515 (gtk_style_attach): assertion 
`window != NULL' failed.
Gdk-CRITICAL **: file gdkwindow.c: line 716 (gdk_window_ref): assertion 
`window != NULL' failed.
Gtk-CRITICAL **: file gtkstyle.c: line 515 (gtk_style_attach): assertion 
`window != NULL' failed.
Gdk-CRITICAL **: file gdkwindow.c: line 716 (gdk_window_ref): assertion 
`window != NULL' failed.
Gdk-CRITICAL **: file gdkwindow.c: line 726 (gdk_window_unref): 
assertion `window != NULL' failed.
=========================================================================
This is bug or my error?