[SOLVED] PHP in page prevents PHP in right sidebar from executing

Wordpress 3.6, Atahualpa 3.7.12

Allow PHP In Posts and Pages 3.04.

<http://world.arsu.org>

I use some custom PHP in some pages to access a database of artists and paintings to display selected images to students. That's working fine.

However, I also use some PHP in custom widgets to display various drop-down menus. I actually just php to include an external file for the sidebar widgets.

On any page in which I have accessed the art database, the widgets in the RIGHT sidebar do not work any longer. The left ones still work fine. Eg. <http://world.arsu.org/es/clases/sp3/el-arte-espanol-y-mexicano/velazquez/>

On any page in which I do not access the art database, right and left widgets all work fine. Eg. <http://world.arsu.org/es/clases/sp3/>

I tried manually closing the database connection in my script which accesses the art database, but that had no effect.

Obvious question is does it work in 2013, but I haven't created the custom text widgets in 2013, so I don't know. Any suggestions would be welcome.