If the debug suggestions listed previously do not resolve the issue, open a support case to have the appropriate Xilinx expert assist with the issue.
To create a technical support case in WebCase, see the Xilinx website at:
www.xilinx.com/support/clearexpress/websupport.htm
Items to include when opening a case:
•Detailed description of the issue
•Results of the steps listed previously
•Attach a VCD or WLF dump of the observation
To discuss possible solutions, use the Xilinx User Community: forums.xilinx.com/xlnx/