This process worked for me:

Verify account is member of Distributed COM Users

@ Component services, My Computer, DCOM Config, Microsoft SQL Server Integration services 11.0, Properties, Security, add account

OK

Edit <Install path; mine is D>:\Program Files\Microsoft SQL Server\110\DTS\Binn\MsDtsSrvr.ini.xml, add new instance(s)

What to edit where? The xml file needs to be edited to reflect instance name(s):

<?xml version="1.0" encoding="utf-8"?>

<DtsServiceConfiguration xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

<StopExecutingPackagesOnShutdown>true</StopExecutingPackagesOnShutdown>

<TopLevelFolders>

<Folder xsi:type="SqlServerFolder">

<Name>MSDB</Name>

<ServerName>.</ServerName>

</Folder>

<Folder xsi:type="FileSystemFolder">

<Name>File System</Name>

<StorePath>..\Packages</StorePath>

</Folder>

</TopLevelFolders>

</DtsServiceConfiguration>

From: http://technet.microsoft.com/en-us/library/ms137789.aspx

Regedit HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server\110\SSIS\ServiceConfigFile

<Installpath: mine is D>:\Program Files\Microsoft SQL Server\110\DTS\Binn\ MsDtsSrvr.ini.xml

OK

Grant account db_ssisadmin permissions in MSDB

Already granted.

Restart IS