The installation of the SPI4.2 v6.0.x core seemed to work well, but during the attempt to generate the respective core in CORE Generator 6.1i, several error messages occurred--and no output files were generated.
"Preparing to elaborate core... Elaborating the module... ERROR: An internal error has occurred. To resolve this error, please consult the Answers Database at http://support.xilinx.com ERROR: Sim has a problem implementing the selected core. Implementation netlist will not be generated. ERROR: SimGenerator: Failure of Sim to implement customization parameters core v2p50 ERROR: Did not generate EDIF implementation netlist (.EDN) file for core <v2p50>. ERROR: Errors encountered while generating v2p50 (SPI-4.2 6.0). No output files have been generated."
SPI-4.2 (PL4) v6.0x requires CORE Generator 5.2i and SP3. Your must first install: ISE 5.2i with Service Pack 3 and IP Update # 2 (also known as F_IP2). The SPI-4.2 v6.0.x core is not supported on any other versions of ISE software (ISE 4.2i, ISE 5.1i, or ISE 6.1i).
Once SPI-4.2 v6.0.x core is generated, it is possible to run implementation using ISE 6.1i.
Keep your ISE 5.2SP3 version to generate and use ISE 6.1i to implement. Please see (Xilinx Answer 18500) for known issues with this flow.