http://www.zwsoft.com/forum/viewthread.php?tid=1763 Hi magla, Can you tell me your ZWCAD version number? We tested in 2011.02.08(16566) and it do crash, so we have submitted the crash report to R&amp;D, the Bug ID is 15601, you can keep it for further inquery. Thanks! magla 2011-04-05 22:23:34 http://www.zwsoft.com/forum/viewthread.php?tid=1763&pid=13443 VERNUM = "2011.02.28(16649)" magla 2011-04-06 04:27:44 http://www.zwsoft.com/forum/viewthread.php?tid=1763&pid=13438 <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><FONT size=3><FONT face=Calibri>I try to close all open drawing with one click on button with this code <SPAN style="mso-spacerun: yes"> </SPAN>:<?:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></FONT></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> </FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> Sub cmdCloseAll_Click()</FONT></o:p></SPAN><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> Dim SviOtvoreniNacrti As ZwcadDocument </FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> For Each SviOtvoreniNacrti In ThisDocument.Application.Documents SviOtvoreniNacrti.Close Next End End Sub</FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> </FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> </FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><FONT size=3><FONT face=Calibri>Program close all open drawings but each time ZWCAD 2011 crashes down .<o:p></o:p></FONT></FONT></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><o:p><FONT size=3 face=Calibri> </FONT></o:p></SPAN> <P style="MARGIN: 0cm 0cm 0pt" =Msonormal><SPAN lang=EN-US><FONT size=3><FONT face=Calibri>Any idea ?<o:p></o:p></FONT></FONT></SPAN> magla 2011-04-04 04:28:24