unity-system-compositor crashed with SIGSEGV in __gxx_personality_v0()

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i log into ubuntu 16.04 only with gnome compiz - all other flavors just loop the login screen - mir, unity, gnome other variations, etc... they all go back to the login page after i enter my userid password...
many thanks

ProblemType: Crash
DistroRelease: Ubuntu 16.04
Package: unity-system-compositor 0.4.2+16.04.20160219.1-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-11.26-generic 4.4.4
Uname: Linux 4.4.0-11-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
CrashCounter: 1
Date: Sun Mar 13 03:03:08 2016
ExecutablePath: /usr/sbin/unity-system-compositor
GraphicsCard:
 Intel Corporation Crystal Well Integrated Graphics Controller [8086:0d26] (rev 08) (prog-if 00 [VGA controller])
   Subsystem: Dell Crystal Well Integrated Graphics Controller [1028:0688]
   Subsystem: Dell GM204M [GeForce GTX 980M] [1028:0688]
InstallationDate: Installed on 2015-09-16 (178 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcCmdline: /usr/sbin/unity-system-compositor --disable-inactivity-policy=true --on-fatal-error-abort --file /run/lightdm-mir-0 --from-dm-fd 12 --to-dm-fd 21 --vt 8
ProcEnviron:

Signal: 11
SourcePackage: unity-system-compositor
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
 __gxx_personality_v0 () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
 _Unwind_RaiseException (exc=0x10a6230) at ../../../src/libgcc/unwind.inc:113
 _Unwind_Resume_or_Rethrow (exc=0x10a6230) at ../../../src/libgcc/unwind.inc:252
 __cxa_rethrow () from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
Title: unity-system-compositor crashed with SIGSEGV in __gxx_personality_v0()
UpgradeStatus: Upgraded to xenial on 2016-03-07 (5 days ago)
UserGroups:

version.libdrm: libdrm2 2.4.67-1
version.lightdm: lightdm 1.17.5-0ubuntu2
version.mesa: libegl1-mesa-dev N/A

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make this software better. This particular crash has already been reported and is a duplicate of bug #1553549, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.