Reproduction steps:
0.) Use latest 7.0.x bundle, delete the automatically deployed Adaptive Media plugin from osgi/modules. It overrides the publishing logic and prevents the exception.
1.) Create a new site and enable local Staging with the default configuration.
2.) On your site create two new pages (page1 and page2).
3.) Create a new basic web content, add some data to the title and the content section (test1, test1).
4.) Upload a new document to the Documents and Media.
5.) Add a web content display to the page1 and configure it to show the article from step 3.
6.) Make a publication to Live.
Checkpoint: The publication is successful.
7.) Add the image to the article and publish it.
8.) Make a publication to Live.
Checkpoint: The publication is successful.
9.) Now add an Asset Publisher to page2 and initiate a new publication.
Result: The publication will fail with a NullPointerException. The full error can be found in 'NullPointerException.txt'.
Originally LPS-74209
Also tested:
master @ commit (5cbf6d6d84b0e202b8de63269f264b2f252c9b66) fixed