git - Eclipse Egit : Label decorations does not show and option does not remain checked -

without apparent reason (no update whatsoever), since few days egit text decoration doesn't show in eclipse more. unchecked in "window > preferences > general > appearance > label decorations > git", , cannot check it!! if check , "apply" , "ok", nothing happens , remains unchecked...

my eclipse log goes :

!entry org.eclipse.ui.workbench 4 2 2013-04-05 14:18:08.926 !message problems occurred when invoking code plug-in: "org.eclipse.ui.workbench". !stack 0 org.eclipse.jgit.errors.revwalkexception: walk failure.     @ org.eclipse.jgit.revwalk.revwalk.iterator(revwalk.java:1237)     @ org.eclipse.jgit.revwalk.revwalkutils.find(revwalkutils.java:129)     @ org.eclipse.jgit.revwalk.revwalkutils.count(revwalkutils.java:94)     @ org.eclipse.jgit.lib.branchtrackingstatus.of(branchtrackingstatus.java:100)     @ org.eclipse.egit.ui.internal.decorators.decoratableresourcehelper.getbranchstatus(decoratableresourcehelper.java:48)     @ org.eclipse.egit.ui.internal.decorators.decoratableresourceadapter.<init>(decoratableresourceadapter.java:72)     @ org.eclipse.egit.ui.internal.decorators.gitlightweightdecorator.decorateresource(gitlightweightdecorator.java:189)     @ org.eclipse.egit.ui.internal.decorators.gitlightweightdecorator.decorate(gitlightweightdecorator.java:166)     @ org.eclipse.ui.internal.decorators.lightweightdecoratordefinition.decorate(lightweightdecoratordefinition.java:263)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager$lightweightrunnable.run(lightweightdecoratormanager.java:81)     @ org.eclipse.core.runtime.saferunner.run(saferunner.java:42)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager.decorate(lightweightdecoratormanager.java:365)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager.getdecorations(lightweightdecoratormanager.java:347)     @ org.eclipse.ui.internal.decorators.decorationscheduler$1.ensureresultcached(decorationscheduler.java:371)     @ org.eclipse.ui.internal.decorators.decorationscheduler$1.run(decorationscheduler.java:331)     @ org.eclipse.core.internal.jobs.worker.run(worker.java:53) caused by: org.eclipse.jgit.errors.missingobjectexception: missing commit 11d64b0d91bf24bfb551fbf20c3f6b244dacd74a     @ org.eclipse.jgit.storage.file.windowcursor.open(windowcursor.java:127)     @ org.eclipse.jgit.revwalk.revwalk.getcachedbytes(revwalk.java:861)     @ org.eclipse.jgit.revwalk.revcommit.parseheaders(revcommit.java:142)     @ org.eclipse.jgit.revwalk.pendinggenerator.next(pendinggenerator.java:148)     @ org.eclipse.jgit.revwalk.delayrevqueue.next(delayrevqueue.java:86)     @ org.eclipse.jgit.revwalk.fixuninterestinggenerator.next(fixuninterestinggenerator.java:77)     @ org.eclipse.jgit.revwalk.startgenerator.next(startgenerator.java:181)     @ org.eclipse.jgit.revwalk.revwalk.next(revwalk.java:422)     @ org.eclipse.jgit.revwalk.revwalk.iterator(revwalk.java:1235)     ... 15 more  !entry org.eclipse.ui 4 4 2013-04-05 14:18:08.927 !message exception in decorator. 'git' decorator disabled.  !entry org.eclipse.ui 4 4 2013-04-05 14:18:08.927 !message walk failure. !stack 0 org.eclipse.jgit.errors.missingobjectexception: missing commit 11d64b0d91bf24bfb551fbf20c3f6b244dacd74a     @ org.eclipse.jgit.storage.file.windowcursor.open(windowcursor.java:127)     @ org.eclipse.jgit.revwalk.revwalk.getcachedbytes(revwalk.java:861)     @ org.eclipse.jgit.revwalk.revcommit.parseheaders(revcommit.java:142)     @ org.eclipse.jgit.revwalk.pendinggenerator.next(pendinggenerator.java:148)     @ org.eclipse.jgit.revwalk.delayrevqueue.next(delayrevqueue.java:86)     @ org.eclipse.jgit.revwalk.fixuninterestinggenerator.next(fixuninterestinggenerator.java:77)     @ org.eclipse.jgit.revwalk.startgenerator.next(startgenerator.java:181)     @ org.eclipse.jgit.revwalk.revwalk.next(revwalk.java:422)     @ org.eclipse.jgit.revwalk.revwalk.iterator(revwalk.java:1235)     @ org.eclipse.jgit.revwalk.revwalkutils.find(revwalkutils.java:129)     @ org.eclipse.jgit.revwalk.revwalkutils.count(revwalkutils.java:94)     @ org.eclipse.jgit.lib.branchtrackingstatus.of(branchtrackingstatus.java:100)     @ org.eclipse.egit.ui.internal.decorators.decoratableresourcehelper.getbranchstatus(decoratableresourcehelper.java:48)     @ org.eclipse.egit.ui.internal.decorators.decoratableresourceadapter.<init>(decoratableresourceadapter.java:72)     @ org.eclipse.egit.ui.internal.decorators.gitlightweightdecorator.decorateresource(gitlightweightdecorator.java:189)     @ org.eclipse.egit.ui.internal.decorators.gitlightweightdecorator.decorate(gitlightweightdecorator.java:166)     @ org.eclipse.ui.internal.decorators.lightweightdecoratordefinition.decorate(lightweightdecoratordefinition.java:263)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager$lightweightrunnable.run(lightweightdecoratormanager.java:81)     @ org.eclipse.core.runtime.saferunner.run(saferunner.java:42)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager.decorate(lightweightdecoratormanager.java:365)     @ org.eclipse.ui.internal.decorators.lightweightdecoratormanager.getdecorations(lightweightdecoratormanager.java:347)     @ org.eclipse.ui.internal.decorators.decorationscheduler$1.ensureresultcached(decorationscheduler.java:371)     @ org.eclipse.ui.internal.decorators.decorationscheduler$1.run(decorationscheduler.java:331)     @ org.eclipse.core.internal.jobs.worker.run(worker.java:53) 

my conf :

eclipse platform version: 4.2.2 build id: m20130204-1200  eclipse dynamic languages toolkit - index frameworks version: 4.0.0.201206120848  eclipse egit version: 2.2.0.201212191850-r 

thanks help!

according stack trace, seems choke because of

missing commit 11d64b0d91bf24bfb551fbf20c3f6b244dacd74a 

you might want reset (hard) repository origin/master, or clone again upstream repository, assuming local problem of repository only, might vanish "replacing" upstream content.