wxFileDialog Cause unknown excpetion

[SamHu]

winXP
wxWidgets 2.8.12
mingw6.4
codelite
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I am using the wxFileDialog to get a path and it is working fine , But when I close
my app the windows OS send me a error message of unknown exception.
I am pretty sure that the wxFileDialog cause it because when i use a text dialog(to get the file path) instead,
this won't happen.
is there any thing that i should be careful with when using filedialog???

[Youka]

wxFileDialog uses the native control of your system (note the "Filename" text or button labels in your language) and should be shown as modal window (like it's normal for dialogs).