Installation of .net 3.5 on Windows Server 2012

I struggled installing .net 3.5 on Windows 2012 Server. After going through the add features and selecting .net 3.5 I got the following Warning:

The request to add or remove feature on the specified server failed.
Installation of one or more roles, role services, or features failed. - The source files could not be downloaded.
Use the /source option to specify the location of the files that are required to restore the feature. The file location should be either the root directory of a mounted image or a component store that has the Windows Side-by-Side directory as an immediate subfolder.

From a administrative command prompt run the following:

dism.exe /online /enable-feature /featurename:NetFX3 /Source:d:\sources\sxs /LimitAccess /all

This will install .net 2.0 and 3.5.

"Remote Downlevel Document" instead of jobname in Samba

To save the planet I implemented a print to PDF server for our Quality Assurance department at work. It consists an installation of Samba and a hand full of custom scripts.

I recently upgraded this server and added it to our domain (up until now there were no sensitive documents being processed but as we planned on adding these it became necessary to restrict access to some shares).

I have just spent far too much time trying to work out why windows was not passing the document name from the printing application correctly. It seems that the "jobname" parameter being passed from Samba to my script was always "Remote Downlevel Document" when previously it was something more helpful like the title of a document.

The offending line in the configuration was:

disable spoolss = yes

Once this was removed everything started working as before.