[Owncloud] Sharing broken?

[peter at chubb.wattle.id.au]

>>>>> "Peter" == Peter Chubb <peter at chubb.wattle.id.au> writes:

>>>>> "Frank" == Frank Karlitschek <frank at owncloud.org> writes:
Frank> Hi, strange error. Do you use an reverse proxy setup?  Or have
Frank> you installed ownCloud in a directory containing a symbolic
Frank> link?

Peter> Nope and Nope.

Peter> That particular error no longer appears, now there's just a
Peter> 404.

Frank> Can you test the latest 4.5 RC ?

Peter> I'll give it a go later.

I tried it.  On first connecting to the new instance I see a
backtrace:


( ! ) Fatal error: Uncaught exception 'Exception' with message 'Sharing 29329 failed, because the user peterc at Family does not exist' in /var/www/owncloud/lib/public/share.php on line 186
( ! ) Exception: Sharing 29329 failed, because the user peterc at Family does not exist in /var/www/owncloud/lib/public/share.php on line 186
Call Stack
#	Time	Memory	Function	Location
1	0.0003	243304	{main}( )	../index.php:0
2	0.0040	418608	require_once( '/var/www/owncloud/lib/base.php' )	../index.php:26
3	0.0041	419176	OC::init( )	../base.php:598
4	0.1432	828528	OC::checkUpgrade( )	../base.php:337
5	2.4262	4696624	OC_App::loadApps( )	../base.php:229
6	3.8561	5726064	OC_App::loadApp( )	../app.php:58
7	3.8561	5726072	OC_App::checkUpgrade( )	../app.php:84
8	3.8564	5728816	OC_App::updateApp( )	../app.php:622
9	6.4921	5807848	include( '/var/www/owncloud/apps/files_sharing/appinfo/update.php' )	../app.php:679
10	6.6784	6492928	OCP\Share::shareItem( )	../update.php:41


I'm usinfg the unix_pam backend for authentication.  Is that an issue?