Odd problem with NSSavePanel

[Germán Arias]

I'm having a problem with Gemas and NSSavePanel. You can reproduce it with 
these steps:

* Launch Gemas.
* Create a new file of type "Other" (Document -> New File -> Other).
* Write something.
* Save the file (don't add an extension).
* Close the document.
* Create a new file of type "Other".
* Write something.
* Try to save this, the app crash.

At GemasInfo.plist the extension of this type is described as ( * ), this is 
any file. And this problem only occurs with types that have its extension like 
this one.

Here the backtrace:

(gdb) backtrace
#0  0x00a992c6 in objc_msg_lookup () from /usr/lib/i386-linux-gnu/libobjc.so.3
#1  0x0032866b in -[NSSavePanel(PrivateMethods) _selectCellName:] (
    self=0x82bfa28, _cmd=0x55f520, title=0x8548ea0) at NSSavePanel.m:528
#2  0x00328af5 in -[NSSavePanel(PrivateMethods) _setFileName:] (
    self=0x82bfa28, _cmd=0x55f588, filename=0x8548ea0) at NSSavePanel.m:587
#3  0x00328d13 in -[NSSavePanel(PrivateMethods) _setupForDirectory:file:] (
    self=0x82bfa28, _cmd=0x55f1b0, path=0x821c928, filename=0x8548ea0)
    at NSSavePanel.m:610
#4  0x00329c8d in -[NSSavePanel runModalForDirectory:file:] (self=0x82bfa28,
    _cmd=0x55f6a0, path=0x821c928, filename=0x8548ea0) at NSSavePanel.m:1140
#5  0x00329ba6 in -[NSSavePanel runModal] (self=0x82bfa28, _cmd=0x518e10)
    at NSSavePanel.m:1111
#6  0x00285fbb in -[NSDocument runModalSavePanel:withAccessoryView:] (
    self=0x837c278, _cmd=0x518ef0, savePanel=0x82bfa28,
    accessoryView=0x84c4f68) at NSDocument.m:1088
#7  0x00289be7 in -[NSDocument _runSavePanelForSaveOperation:] (
    self=0x837c278, _cmd=0x518ef8, saveOperation=NSSaveOperation)
    at NSDocument.m:1203
#8  0x00286319 in -[NSDocument 
runModalSavePanelForSaveOperation:delegate:didSaveSelector:contextInfo:] 
(self=0x837c278, _cmd=0x519020,
    saveOperation=NSSaveOperation, delegate=0x0, didSaveSelector=0x0,
    contextInfo=0x0) at NSDocument.m:1229
#9  0x0028745d in -[NSDocument 
saveDocumentWithDelegate:didSaveSelector:contextInfo:] (self=0x837c278, 
_cmd=0x519018, delegate=0x0, didSaveSelector=0x0,
---Type <return> to continue, or q <return> to quit---
    contextInfo=0x0) at NSDocument.m:1564
#10 0x002872c1 in -[NSDocument saveDocument:] (self=0x837c278, _cmd=0x8147910,
    sender=0x83080e0) at NSDocument.m:1524
#11 0x0020ce97 in -[NSApplication sendAction:to:from:] (self=0x81253f8,
    _cmd=0x53ef50, aSelector=0x8147910, aTarget=0x0, sender=0x83080e0)
    at NSApplication.m:2230
#12 0x002e2c64 in -[NSMenu performActionForItemAtIndex:] (self=0x8302618,
    _cmd=0x5420a0, index=4) at NSMenu.m:1323
#13 0x002ecb6a in -[NSMenuView _trackWithEvent:startingMenuView:] (
    self=0x8309300, _cmd=0x542118, event=<optimized out>,
    mainWindowMenuView=0x0) at NSMenuView.m:1916
#14 0x002eb113 in -[NSMenuView trackWithEvent:] (self=0x8309300,
    _cmd=0x542188, event=0x833e558) at NSMenuView.m:1948
#15 0x002eb414 in -[NSMenuView mouseDown:] (self=0x8309300, _cmd=0x59fff0,
    theEvent=0x833e558) at NSMenuView.m:1988
#16 0x003d6724 in -[NSWindow sendEvent:] (self=0x8308630, _cmd=0x4eaf40,
    theEvent=0x833e558) at NSWindow.m:3896
#17 0x00211f7b in -[NSApplication sendEvent:] (self=0x81253f8, _cmd=0x4eae78,
    theEvent=0x833e558) at NSApplication.m:2105
#18 0x002144eb in -[NSApplication run] (self=0x81253f8, _cmd=0x4e1348)
    at NSApplication.m:1562
#19 0x001f1f0f in NSApplicationMain (argc=1, argv=0xbfffe404) at Functions.m:91
#20 0x08048fe7 in main (argc=1, argv=0xbfffe404) at Gemas_main.m:26

Any advice?

Thanks.
Germán.