can't install any package from .deb file on kubuntu

[Ladislav Maxa]

Binary package hint: kpackagekit

Kubuntu 9.04

I've open a .deb file ti install it but KpackangeKit hasn't done it.

This is the error report:

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 1261, in doInstallFiles deb = debfile.DebPackage(path, self._cache) File "/usr/lib/packagekit/debfile.py", line 53, in __init__ self.open(filename) File "/usr/lib/packagekit/debfile.py", line 58, in open if not apt_inst.arCheckMember(open(self.filename), "debian-binary"): UnicodeEncodeError: 'ascii' codec can't encode character u'\u0159' in position 15: ordinal not in range(128)