Version:           unspecified
OS:                Linux

$ kmenuedit --version
Qt: 4.7.2
KDE Development Platform: 4.6.5 (4.6.5)
KDE Menu Editor: 0.8

When using kmenuedit to add a submenu or item, then clicking "save", it looks like it worked, and everything saved (no error message). However, my file permissions were wrong (for unknown reasons), so it did not save properly. I am reporting this, because there should be feedback, saying that the changes failed.

If I run kmenuedit from command line with the broken file permissions, and create a submenu, and an item in it, here is the output:
===============================
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /home/peter/.config/ibus/bus
kmenuedit(10553)/kdecore (services) KServicePrivate::init: The desktop entry file  "/home/peter/.local/share/applications/a.desktop"  has Type= "Application"  but no Exec line 

QFile::remove: Empty or null file name
QFile::remove: Empty or null file name
===============================

If I do the same after changing permissions (so things work), here is the output:
===============================
QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No such file or directory
QFileSystemWatcher: failed to add paths: /home/peter/.config/ibus/bus
kmenuedit(11533)/kdecore (services) KServicePrivate::init: The desktop entry file  "/home/peter/.local/share/applications/test2.desktop"  has Type= "Application"  but no Exec line 
===============================

Here is what I did to fix it:

sudo chown peter:peter -R ~/.local

I don't know why the permissions were wrong (we can blame Ubuntu/kubuntu), but the owner of some directories was root:root. (In particular, the one I noticed first was ~/.local/share/applications)

Reproducible: Always

Steps to Reproduce:
sudo chown root:root -R ~/.local
kmenuedit
(add a submenu and an item)
(hit save)
(close)
kmenuedit


Actual Results:  
You sometimes have your submenu, but not the item. 
Sometimes you have a submenu with the wrong name, such as ~2 added on the end and no item.
Sometimes you have nothing that you added.

Expected Results:  
If permissions are wrong, the result should be error messages on screen in the gui, that clearly state that something important has failed having to do with having write access to files or directories. 

Example:
   Failed to write changes to disk. Error was: /home/peter/.local/... : Permission denied