web client exception error in webclient E900

Hi. what could be the root cause of below as i somehow can't search the record in my address book in E900 webclient....

27 Sep 2013 18:14:02,482 [SEVERE] DEMO - [JDBJ]            JDBException in SerializedSpecMap:callWebJiti for DICT-AR1 under main object DICT-AR1
[INTERNAL_ERROR] Internal error.
27 Sep 2013 18:14:02,482 [SEVERE] DEMO - [JAS]             JDBException caught in NetManager.getSpec():  | An error occured when trying to get the serialized spec object, User Name : DEMO, Environment : DEMO900, Role : *ALL com.jdedwards.database.base.JDBException: [INTERNAL_ERROR] Internal error.
27 Sep 2013 18:14:02,482 [SEVERE] DEMO - [RUNTIME]         Unable to open form:P01012_W01012B_ZJDE0001
27 Sep 2013 18:14:02,482 [SEVERE] DEMO - [RUNTIME]         Exception caught: com.jdedwards.runtime.base.DDInfoException: A JASServiceException is caught when fetching data dictionary 27 Sep 2013 18:14:06,247 [SEVERE] DEMO - [RUNTIME]         exception in processEvent java.lang.NullPointerException