Worklist error after CRM upgrade: Syntax error in CL_CRM_BT_T_SEARCHVIEW_IMPL class, GET_STATUS_BY_DESCRIPTION method

After CRM upgrade from CRM 7.0 EHP1 to CRM 7.0 EHP sps 14 we get a syntax error when accesing worklist funcionatity.

The problem is a syntax error in a standard class called: CL_CRM_BT_T_SEARCHVIEW_IMPL

This class has a method called GET_STATUS_BY_DESCRIPTION which seems to be declared twice, one as a public method and the other one as a private method. So we're getting a syntax error.

Does anyone know the cause of this error and the solution?? we can't find a snote which fix this error.

I've attached dump in st22

Thanks in advance