package libcurl3-gnutls 7.38.0-3ubuntu2.2 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386

package libcurl3-gnutls 7.38.0-3ubuntu2.2 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386

ProblemType: Package
DistroRelease: Ubuntu 15.04
Package: libcurl3-gnutls 7.38.0-3ubuntu2.2
ProcVersionSignature: Ubuntu 3.19.0-39.44-generic 3.19.8-ckt9
Uname: Linux 3.19.0-39-generic x86_64
NonfreeKernelModules: fglrx wl
ApportVersion: 2.17.2-0ubuntu1.8
Architecture: amd64
Date: Fri Dec 11 14:19:36 2015
DpkgTerminalLog:
 Preparing to unpack .../libcurl3-gnutls_7.38.0-3ubuntu2.2_i386.deb ...
 Unpacking libcurl3-gnutls:i386 (7.38.0-3ubuntu2.2) over (7.35.0-1ubuntu2.5) ...
 dpkg: error processing archive /var/cache/apt/archives/libcurl3-gnutls_7.38.0-3ubuntu2.2_i386.deb (--unpack):
  trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386
DuplicateSignature: package:libcurl3-gnutls:7.38.0-3ubuntu2.2:trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386
ErrorMessage: trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386
InstallationDate: Installed on 2015-11-25 (15 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
RelatedPackageVersions:
 dpkg 1.17.25ubuntu1.1
 apt 1.0.9.7ubuntu4.2
SourcePackage: curl
Title: package libcurl3-gnutls 7.38.0-3ubuntu2.2 failed to install/upgrade: trying to overwrite shared '/usr/share/doc/libcurl3-gnutls/copyright', which is different from other instances of package libcurl3-gnutls:i386
UpgradeStatus: No upgrade log present (probably fresh install)