Created attachment 1115268 [details]
Screenshot of the VNic window

Description of problem:

We recently upgraded from 3.5.3 to 3.6.1. Everything went fairly smooth, however, today we realized we're facing some issues.

Users cannot add network interfaces on the User Portal to their VMs. It seems that when they click on "New", the "Profile" checkbox is empty so they cannot choose any value.

Version-Release number of selected component (if applicable):

3.6.1.3

How reproducible:

Always

Steps to Reproduce:

The issue throws two uncaught exception popups.

First error
===========

1. Login to the User Portal
2. On the Extended view, click on any VM
3. In the Network Interfaces tab, click on New
4. A popup with an Uncaught exception is shown: (TypeError) __gwt$exception: <skipped>: NMk(...) is null
5. Checkbox to the Profile field is always empty, thus no interface might be added.

The exception data contains this:

Fri Jan 15 19:19:15 GMT+000 2016 
SEVERE: Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) 
 __gwt$exception: <skipped>: NMk(...) is null
	at Unknown.POm(Unknown Source)
	at Unknown.ZFk(Unknown Source)
	at Unknown.aGk(Unknown Source)
	at Unknown.SJk(Unknown Source)
	at Unknown.VJk(Unknown Source)
	at Unknown.yIk(Unknown Source)
	at Unknown.BIk(Unknown Source)
	at Unknown.bTc(Unknown Source)
	at Unknown.B6h(Unknown Source)
	at Unknown.VS(Unknown Source)
	at Unknown.mT(Unknown Source)
	at Unknown.jAd/c.onreadystatechange<(Unknown Source)
	at Unknown.Yp(Unknown Source)
	at Unknown.aq(Unknown Source)
	at Unknown._p/<(Unknown Source)
	at Unknown.anonymous(Unknown Source)
 67DA206BA450D4E3DB6679D8DE8FF6E0.cache.html:6298:7804

From the 67DA206BA450D4E3DB6679D8DE8FF6E0.symbolMap file: 

POm,org.ovirt.engine.ui.uicommonweb.models.vms.ProfileBehavior$2::onSuccess(Ljava/lang/Object;Ljava/lang/Object;)V,org.ovirt.engine.ui.uicommonweb.models.vms.ProfileBehavior$2,onSuccess,org/ovirt/engine/ui/uicommonweb/models/vms/ProfileBehavior.java,62,27

Second error
============

Exactly same steps as above, but exception is:

SEVERE: Uncaught exception: com.google.gwt.core.client.JavaScriptException: (TypeError) 
 __gwt$exception: <skipped>: Cannot read property 'r' of null
	at Unknown.MOm(<anonymous>@534837)
	at Unknown.WFk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@49)
	at Unknown.ZFk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@364)
	at Unknown.PJk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@40)
	at Unknown.SJk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@24798)
	at Unknown.vIk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@25)
	at Unknown.yIk(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@23049)
	at Unknown.YSc(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@14821)
	at Unknown.y6h(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@2013)
	at Unknown.lT(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@137)
	at Unknown.ET(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@3663)
	at Unknown.<anonymous>(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@65)
	at Unknown.Zp(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@29)
	at Unknown.bq(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@57)
	at Unknown.<anonymous>(https://fqdn/ovirt-engine/userportal/6610290E43BFC953D54ABE4A12EE2839.cache.html@54)

From the 6610290E43BFC953D54ABE4A12EE2839.symbolMap file:

MOm,org.ovirt.engine.ui.uicommonweb.models.vms.ProfileBehavior$2::onSuccess(Ljava/lang/Object;Ljava/lang/Object;)V,org.ovirt.engine.ui.uicommonweb.models.vms.ProfileBehavior$2,onSuccess,org/ovirt/engine/ui/uicommonweb/models/vms/ProfileBehavior.java,62,27

Additional info:

It's worth mentioning that we only upgraded the manager, not yet the
hosts.

It's also worth mentioning that I can add interfaces from the admin
portal. It's only the user portal where this happens.

Seems not related to permissions, as I granted the user the VnicProfileUser and even NetworkAdmin permissions. Same result.