appgrid.py crashed with UnicodeDecodeError in __init__(): 'utf-8' codec can't decode byte 0xf6 in position 72: invalid start byte

i dunno what was going on

ProblemType: Crash
DistroRelease: Ubuntu 15.04
Package: appgrid 0.215 [origin: LP-PPA-appgrid-stable]
ProcVersionSignature: Ubuntu 3.19.0-23.24-generic 3.19.8-ckt2
Uname: Linux 3.19.0-23-generic x86_64
ApportVersion: 2.17.2-0ubuntu1.1
Architecture: amd64
CrashDB: {"impl": "launchpad", "project": "appgrid"}
CurrentDesktop: Unity
Date: Mon Jul 27 03:15:01 2015
EcryptfsInUse: Yes
ExecutablePath: /usr/share/appgrid/appgrid.py
InstallationDate: Installed on 2015-07-17 (10 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
InterpreterPath: /usr/bin/python3.4
PackageArchitecture: all
ProcCmdline: /usr/bin/python3 /usr/share/appgrid/appgrid.py /home/username/Downloads/albumart_1.6.6-1_all.deb
PythonArgs: ['/usr/share/appgrid/appgrid.py', '/home/username/Downloads/albumart_1.6.6-1_all.deb']
SourcePackage: appgrid
Title: appgrid.py crashed with UnicodeDecodeError in __init__(): 'utf-8' codec can't decode byte 0xf6 in position 72: invalid start byte
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo