Large rules can be built and saved to the repository by enabling the property rulesRepository.enableLargeRules to true in PersonalizationService.properties file located at<wp_profile>\PortalServer\config\config\services.
Additional Information is available in the following technote. (ConstraintViolationException while saving large Personalization rule.)

http://www-01.ibm.com/support/docview.wss?uid=swg21398966

Non-administrator users receive an error when creating a rule for New Personalization Element in the Personalization Picker

Granting proper access rights to the non-administrator should resolve the issue. Please refer to the section ‘Access rights for Business Rules’ in the Infocenter.
http://publib.boulder.ibm.com/infocenter/wpdoc/v6r1/index.jsp?topic=/com.ibm.wp.ent.doc_v615/admin/sec_acc_rights.html

Not able to create a new Business Rule on WebSphere Portal 6.1.0.2. No page is displayed when clicking New Rule.

POSSIBLE CAUSE: User editing the rule then walks away without saving and session times out.

Use Support Tools Portlet available at Lotus Greenhouse portlet catalog (https://greenhouse.lotus.com/home/login.jsp?ibmsst=LotusBtn ) to identify the UUID of the rule (in the RULESWORSPACE) to remove the locks for that node. After downloading and deploying the Support tools portlet

1. Enable Write Access. ( Contact IBM Support to obtain unlock access code ). Use the unlock access code available from Support.
2. Browse Nodes and navigate to the node ( in the RULESWORKSPACE )
3. Locate the lock and click on UNLOCK

Personalization Navigator shows the message:

 
"The current view cannot be displayed"
&
Errors received when starting the application:
************************************************************************
00000888 RegistryFacto W
com.ibm.wps.caf.config.RegistryFactory getPluginRegistry plugin added twice
00000888 RegistryFacto W
com.ibm.wps.caf.config.RegistryFactory getPluginRegistry <Null Message>
                                 java.lang.IllegalStateException: The
plugin com.ibm.websphere.personalization.ui is not enabled

Install PK86042: PZN CUMULATIVE FIX 1 FOR VERSION 6.1.0.2 .