Check for XMLWriter class
Check for XMLWriter class

This is not installed by default in all cases and will break the DAV features of ownCloud. Lot's of reports such as https://github.com/owncloud/ios-issues/issues/167#issuecomment-63798507

pmattern/server,Ardinis/server,endsguy/server,whitekiba/server,cernbox/core,pixelipo/server,owncloud/core,nextcloud/server,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,jbicha/server,sharidas/core,andreas-p/nextcloud-server,whitekiba/server,bluelml/core,whitekiba/server,endsguy/server,pollopolea/core,nextcloud/server,andreas-p/nextcloud-server,owncloud/core,xx621998xx/server,sharidas/core,pixelipo/server,nextcloud/server,owncloud/core,sharidas/core,cernbox/core,lrytz/core,IljaN/core,endsguy/server,xx621998xx/server,IljaN/core,whitekiba/server,pmattern/server,lrytz/core,owncloud/core,whitekiba/server,bluelml/core,lrytz/core,IljaN/core,pmattern/server,pollopolea/core,andreas-p/nextcloud-server,Ardinis/server,cernbox/core,Ardinis/server,cernbox/core,xx621998xx/server,sharidas/core,endsguy/server,IljaN/core,pmattern/server,lrytz/core,jbicha/server,pixelipo/server,jbicha/server,michaelletzgus/nextcloud-server,jbicha/server,pmattern/server,phil-davis/core,bluelml/core,michaelletzgus/nextcloud-server,sharidas/core,bluelml/core,pixelipo/server,pollopolea/core,pollopolea/core,pixelipo/server,owncloud/core,andreas-p/nextcloud-server,Ardinis/server,pollopolea/core,lrytz/core,michaelletzgus/nextcloud-server,IljaN/core,endsguy/server,xx621998xx/server,cernbox/core,xx621998xx/server,Ardinis/server,jbicha/server,bluelml/core,nextcloud/server