In my environment, pico works perfectly with 2.0.16 from xoops.org.

At first, turn debug ON.
If you see any errors report it.

Else, It must be the problem of the template's compatibility of 2.0.14/15/16 (I say BUG).


I show three ways to fix that for you.

- Correcting Patched file
Try to download and replace it.
http://www.peak.ne.jp/support/xoops/xoops-2.0.16-resource.db.fixed.zip
(Best way)

- Using custom templates set
Install altsys
Copy the template of pico to new template set in altsys
Set the template set as default in your preferences
(Second way)

- Copy the template files into public side
(The worst way)


Anyway, you should install altsys for solving template problems also.