I tried add screen on other screen, but error occured.
That error message is below.

ver 1.8.10

Cannot add item
Incorrect resource provided for screen item

ver 1.9.9

Details
ERROR: Cannot add item

Error in query [SELECT t.screenitemid,si.screenid FROM screens_items t WHERE (si.screenid IN ('3')) ] [Unknown column 'si.screenid' in 'field list']
mysql_fetch_assoc() expects parameter 1 to be resource, boolean given [include/db.inc.php:560]
mysql_free_result() expects parameter 1 to be resource, boolean given [include/db.inc.php:561]
Incorrect screen ID "3" provided for screen element.

Undefined index: templateid [include/screens.inc.php:947]

Operation Steps:
1. Create new screen
2. Add graph to that new screen
3. Create other new screen
4. Add first screen to second new screen