Banshee crash on Last.fm login (for Audio CD "Get information from track fingerprint")

[Dave-B]

Trying to rip a CD in banshee, the track information could not be found, so I tried "Get information from track fingerprint" from the context menu, which gives a last.fm login dialog. Entering my (valid) credentials and clicking log in kills Banshee (reproducible every time), with the below message when running from a terminal:

----8<----

terminate called after throwing an instance of 'std::logic_error'
  what(): basic_string::_S_construct NULL not valid
Stacktrace:

  at (wrapper managed-to-native) Banshee.LastfmFingerprint.AudioDecoder.Lastfmfp_decode (intptr,string,int&,int&) <0x00088>
  at (wrapper managed-to-native) Banshee.LastfmFingerprint.AudioDecoder.Lastfmfp_decode (intptr,string,int&,int&) <0x00088>
  at Banshee.LastfmFingerprint.AudioDecoder.Decode (string) <0x00047>
  at Banshee.LastfmFingerprint.LastfmFingerprintService/<OnGetTagFromFingerprint>c__AnonStorey0.<>m__0 (object) <0x00357>
  at (wrapper runtime-invoke) object.runtime_invoke_void__this___object (object,intptr,intptr,intptr) <0x0005c>

Native stacktrace:

 banshee() [0x489171]
 /lib/x86_64-linux-gnu/libpthread.so.0(+0xfc60) [0x7f825e2c8c60]
 /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x35) [0x7f825dcd3d05]
 /lib/x86_64-linux-gnu/libc.so.6(abort+0x186) [0x7f825dcd7ab6]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZN9__gnu_cxx27__verbose_terminate_handlerEv+0x11d) [0x7f824521e6dd]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xb9926) [0x7f824521c926]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xb9953) [0x7f824521c953]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(+0xb9a5e) [0x7f824521ca5e]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZSt19__throw_logic_errorPKc+0x5e) [0x7f82451c707e]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSs12_S_constructIPKcEEPcT_S3_RKSaIcESt20forward_iterator_tag+0xa9) [0x7f8245201979]
 /usr/lib/x86_64-linux-gnu/libstdc++.so.6(_ZNSsC2EPKcRKSaIcE+0x42) [0x7f8245201df2]
 /usr/lib/banshee/Extensions/liblastfmfpbridge.so(_Z22Lastfmfp_initgstreamerP13LastfmfpAudioPKc+0x3a) [0x7f822b3c21ca]
 /usr/lib/banshee/Extensions/liblastfmfpbridge.so(Lastfmfp_decode+0x47) [0x7f822b3c25d7]
 [0x401a96f8]

Debug info from gdb:

Could not attach to process. If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user. For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.

=================================================================
Got a SIGABRT while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries
used by your application.
=================================================================

Aborted

----8<----

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: banshee 2.0.0-2ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic x86_64
Architecture: amd64
Date: Mon Sep 5 08:44:01 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
ProcEnviron:
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: banshee
UpgradeStatus: No upgrade log present (probably fresh install)