Program Crashes when Removing a Page

[dhk <dhkuhl optonline net>]

I have a notebook that crashes the program when
gtk_notebook_remove_page(GTK_NOTEBOOK(nb), page_num) is called.  Each
page of the notebook has a lot of stuff on it and the crash always
happens on the same page.  The source of gtk_notebook_remove_page()
looks like it recursively traverses the page and removes everything.  My
suspicion is that there is something on my page that causes the crash,
but I don't see what it could be.  The following error message is what I
get when gtk_notebook_remove_page() is called.
1285      if(page_num>0) {
(gdb)
1286        gtk_notebook_remove_page(GTK_NOTEBOOK(nb), page_num);
(gdb)

Program received signal SIGSEGV, Segmentation fault.
0x00007fffd8340790 in ?? ()

How can I find out what's causing the crash?

Thanks,

dhk