Zen Reports is its own technology (not really related to our Zen web development stack).  It's a full report-creation technology which some people use instead of reporting tools like Crystal Reports:

http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?...

Because you are actually defining the report output, you can choose how it displays on HTML, PDF, Excel, etc.  

Benjamin,

You might be running into some security issues (check the audit DB to confirm).  Or, you might not have it working because you have "Lock CSP Name" set to "Yes" in one of the web applications (ref: http://docs.intersystems.com/cache20152/csp/docbook/DocBook.UI.Page.cls?KEY=GCSP_config#GCSP_lockcsp).

I just did a quick test as follows in my 2015.1 instance:

1) Created a SAMPLES2 namespace with new SAMPLES2 DB

2) Package mapped "csp" from SAMPLES namespace to SAMPLES2 namespace

3) Edited /csp/samples2 web application as follows:

- added Unauthenticated

- added %DB_SAMPLES Application Role

- Unchecked "Lock CSP Name" AND "Autocompile" (this should be done in both /csp/samples and /csp/samples2)

- pointed "CSP Files Physical Path" to c:\intersystems\e20151\csp\samples\ 

After this I was then able to see /csp/samples2/form.csp (although with errors because I didn't map the Samples.* package to the Samples Namespace).

So it appears to work - you just need to figure out which of the above pieces you missed :)

HTH!

Ben