When opening the elaborated design in the PlanAhead tool, the following error occurs:
Xilinx/14.2/ISE_DS/PlanAhead/bin/rdiArgs.sh: line 95: 11085 Segmentation fault "$RDI_PROG" "$@"
This segmentation fault will occur if an "alias" command is used in the RTL source code.
alias reg_31_30 : std_logic is COMMAND_REGISTERS(31)(30);
PlanAhead 14.x does not support the "Alias" command and does not handle it correctly when opening the elaborated design.
To work around the issue, remove the alias command from the RTL.