General Description: When modifying an IOB in FPGA Editor for a Virtex-E design, attempting to save the design causes FPGA Editor to crash. Sometimes FPGA Editor crashes with no message; other times, the following error message is encountered:
FATAL_ERROR:Ncd:bascmtform.c:161:1.4 - Unable to find button PCI33_5 on primitive IOATTRBOX in cell IOB. Process will terminate. To resolve this error, please consult the Answers Database and other online resources at http://support.xilinx.com