ERROR: Error locating library for class com.xilinx.ip.mult_vgen_v1_0.mult_adderstage_vgen_v1_0$virtex. [Loaded/XILINXM2.1I/coregen/lib/com/xilinx/encore/coremgr/exception/LoadLibraryException.class]
ERROR: Error loading library for class com.xilinx.ip.mult_vgen_v1_0.mult_adderstage_vgen_v1_0$virtex
ERROR: Could not load/define class file com.xilinx.ip.mult_vgen_v1_0.mult_adderstage_vgen_v1_0$virtex.
ERROR: An internal error has occurred. Please call Xilinx support.
ERROR: Sim has a problem implementing the selected core. Implementation netlist will not be generated. [Loaded /XILINXM2.1I/coregen/lib/com/xilinx/encore/coregen/exception/GenerateException.class]
ERROR: SimGenerator: Failure of Sim to implement customization parameters core xmult6
WARNING: Core xmult6 did not generate product ImpNetlist.