[Bug 20412] New: AtcWindows - Crashes if option "non-modal dialog box" selected

http://bugs.winehq.org/show_bug.cgi?id=20412

Summary: AtcWindows - Crashes if option "non-modal dialog box"
                    selected
           Product: Wine
           Version: 1.1.31
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=24220)
 --> (http://bugs.winehq.org/attachment.cgi?id=24220)
atcwindows causes an Access Violation

Unchecking the option "Transparent Supplementary Dialogs" (=the communication
box should be displayed as a non-modal dialog box) and starting a sector,
AtcWindows crashes.

In combination with bug 20411, this error makes the application unusable.