ORA-06511: PL/SQL: cursor already open

Since Thursday we have started seeing a number of Oracle Errors in the Database Alert Log. This appears to be when a user queries a screen with an Object Connection to 

DocReferenceObject

If the Attachment pane is open on the users screen the error is show in the foreground, however if it is minimized it logs the error in the background and the user is unaware (fortunately)

Given that it started just last week it would make sense that it is related to a change, new report, event, but i have searched and cannot find anything that might be causing it. I have a ticket open with support but in case others have experienced the same issue or have any ideas on how to troubleshoot.

The following is the contents of the Database Alert Log

--Text2
--sample parameters
--DocReferenceObject
--CustomerOrder
--ORDER_NO=N720488^

BEGIN :1  := IFSAPP.OBJECT_CONNECTION_SYS.GET_CLIENT_HIT_COUNT (
:2 ,
:3 ,
:4 ,
:5 );
END;

--Text1
ORA-06511: PL/SQL: cursor already open
ORA-06512: at "IFSAPP.OBJECT_CONNECTION_SYS", line 10
ORA-06512: at "IFSAPP.OBJECT_CONNECTION_SYS", line 304
ORA-06512: at "IFSAPP.OBJ_CONNECT_LU_TRANSFORM_API", line 2622
ORA-06512: at "IFSAPP.OBJ_CONNECT_LU_TRANSFORM_API", line 2644
ORA-06512: at "IFSAPP.DOC_REFERENCE_OBJECT_API", line 4954
ORA-06512: at "IFSAPP.DOC_REFERENCE_OBJECT_API", line 5079
ORA-06512: at "IFSAPP.DOC_REFERENCE_OBJECT_API", line 5092
ORA-06512: at line 1
ORA-06512: at "IFSAPP.OBJECT_CONNECTION_SYS", line 761
ORA-06512: at line 1

Any pointers would be much appreciated.