abrt version: 2.0.1
architecture:   x86_64
cmdline:        python /usr/bin/meld
comment:        Happened after some time of doing a two-way merge
component:      meld
executable:     /usr/bin/meld
kernel:         2.6.38.6-27.fc15.x86_64
os_release:     Fedora release 15 (Lovelock)
package:        meld-1.5.1-1.fc15
reason:         undo.py:182:checkpoint:IndexError: list index out of range
time:           Tue May 24 11:48:12 2011
uid:            1000
username:       sfriesel

backtrace:
:undo.py:182:checkpoint:IndexError: list index out of range
:
:Traceback (most recent call last):
:  File "/usr/share/meld/meld/meldwindow.py", line 377, in on_menu_save_activate
:    self.current_doc().save()
:  File "/usr/share/meld/meld/filediff.py", line 1233, in save
:    self.save_file(pane)
:  File "/usr/share/meld/meld/filediff.py", line 1211, in save_file
:    self.undosequence.checkpoint(buf)
:  File "/usr/share/meld/meld/undo.py", line 182, in checkpoint
:    while end < len(self.actions) and self.actions[end + 1].buffer != buf:
:IndexError: list index out of range
:
:Local variables in innermost frame:
:buf: <gtksourceview2.Buffer object at 0x25da730 (GtkSourceBuffer at 0x291d010)>
:start: 10
:self: <UndoSequence object at 0x25f6e60 (meld+undo+UndoSequence at 0x290d500)>
:end: 10