GTK filechooser dialog crashes

[Christian González]

Using Simple-scan 3.16.1 from Ubuntu 15.04 everything went correct until now.
But now, scanning works perfectly, but when I click on "Save" button, simple-scan crashes immediately. I Upgraded to the wily version 3.17.1, no difference.

I suppose it has something to do with GTK+ -maybe the file chooser dialog, as the syslog tells me:

    [+35,26s] ERROR: Settings schema 'org.gtk.Settings.FileChooser' does not contain a key named 'startup-mode'
    Trace/Breakpoint ausgelöst (Speicherabzug geschrieben)

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: simple-scan 3.16.1.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-37.51-generic 3.16.7-ckt9
Uname: Linux 3.16.0-37-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Jun 9 22:51:21 2015
InstallationDate: Installed on 2015-02-25 (104 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. RF511/RF411/RF711
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-37-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SimpleScanLog:

SourcePackage: simple-scan
UpgradeStatus: Upgraded to vivid on 2015-05-21 (19 days ago)
dmi.bios.date: 04/26/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 10HX.M034.20110426.SSH
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: RF511/RF411/RF711
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: 10HX
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr10HX.M034.20110426.SSH:bd04/26/2011:svnSAMSUNGELECTRONICSCO.,LTD.:pnRF511/RF411/RF711:pvr10HX:rvnSAMSUNGELECTRONICSCO.,LTD.:rnRF511/RF411/RF711:rvr10HX:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvrN/A:
dmi.product.name: RF511/RF411/RF711
dmi.product.version: 10HX
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.

[Christian González (droetker)]

@ Robert Ancell: You wrote in the duplicate report: "That looks like you are missing a an update schema for GTK+"
I think too - but until yesterday everything worked fine. How can I fix this?

gsettings list-keys org.gtk.Settings.FileChooser
gives:

sort-column
last-folder-uri
sidebar-width
window-position
show-size-column
show-hidden
window-size
expand-folders
sort-order
location-mode

There is no "startup-mode" key. I suppose therefore it is referenced and crashes.

BUT really. just because a gconf key does not exist, all programs that use that key are crashing???
I mean, yes, C is not really safe in that way, but there should be a check in GTK+ if a key exists before referencing it, right?

I am no C nor a GTK developer, but I think this is a bit strange.

Any hints how I can fix that scheme? Can I add the "startup-mode" key manually? (at least would be a workaround).

[Christian González (droetker)]

I found something similar on http://askubuntu.com/questions/164570/broken-schema-org-gtk-settings-filechooser.
I'll post my /usr/share/glib-2.0/schemas/org.gtk.Settings.FileChooser.gschema.xml in case of any help.

dpkg -s libgtk-3-common | grep -i version
gives:
Version: 3.14.13-0ubuntu1

[Christian González (droetker)]

A hint is here, in the thread: http://<email address hidden>/msg15872.html

[Christian González (droetker)]

Oh. My fault.
I had installed ADA/GNAT/GPS in /usr/local. This includes it's own GTK version, which scrambled mine. Deleting it - all back to normal.