(rawstudio:14574): Gtk-CRITICAL **: gtk_tree_store_get_path: assertion `iter->stamp == tree_store->stamp' failed

When I lunch rawstudio in the previous folder where I have rawstudio metadata (../.rawstudio) rawstudio crash with this message in terminal:
(rawstudio:14574): Gtk-CRITICAL **: gtk_tree_store_get_path: assertion `iter->stamp == tree_store->stamp' failed
segmentation fault

If I delete the .rawstudio folder and lauch rawstudio again, it works properly

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: rawstudio 1.2-5ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic i686
ApportVersion: 1.23-0ubuntu3
Architecture: i386
Date: Mon Oct 31 14:23:12 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: rawstudio
UpgradeStatus: No upgrade log present (probably fresh install)