Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    Ubuntu Packages

Downloaded a .deb for a third-party application (pd-extended, from www.puredata.info).  Installing with kpackagekit fails, with the message "Sorry, an error occurred."  Command line gives a better idea of what went wrong:

----------------
kpackagekit Pd-0.41.4-extended-rc2-ubuntu-jaunty-i386.deb 
ben@bastet:~/installers$ isFIle                                                    
New transaction with tid "/54_aecedcea_data"                                       
KPackageKit(17057) KpkIcons::actionIcon: action unrecognised:  9                   
enumFromString ( State ) : converted "" to "" , enum value -1                      
KPackageKit(17057) KpkTransaction::errorCode: errorCode:  3 "Traceback (most recent call last):
  File "/usr/lib/python2.6/dist-packages/packagekit/daemonBackend.py", line 109, in run        
    threading.Thread.run(self)                                                                 
  File "/usr/lib/python2.6/threading.py", line 477, in run                                     
    self.__target(*self.__args, **self.__kwargs)                                               
  File "/usr/lib/packagekit/aptDBUSBackend.py", line 168, in wrapper                           
    func(*args, **kwargs)                                                                      
  File "/usr/lib/packagekit/aptDBUSBackend.py", line 1263, in doInstallFiles                   
    if not deb.checkDeb():                                                                     
  File "/usr/lib/packagekit/debfile.py", line 365, in checkDeb                                 
    if not self.checkConflicts():                                                              
  File "/usr/lib/packagekit/debfile.py", line 313, in checkConflicts                           
    if self._checkConflictsOrGroup(or_group):                                                  
  File "/usr/lib/packagekit/debfile.py", line 197, in _checkConflictsOrGroup                   
    if self.pkgName == pkg.name:                                                               
AttributeError: 'DebPackage' object has no attribute 'pkgName'                                 
"                                                                                              
KPackageKit(17057) KpkTransaction::finished: Failed.                                           
KPackageKit(17057) KpkTransaction::finished: Yep, we failed.                                   
KPackageKit(17057) KpkInstallFiles::installFilesFinished: Finished.    
-------------------


Installing the same package using GDebi works fine, with no errors or warnings.  Probably the error is really in the package - should KPackageKit overlook it?