problems with pin assignments

[Altera_Forum]

Using the assigments file, I'm working in a simple design which contains NIOS+SRAM+Flash+UART. 

 I've assigned to TX a signal called HC_UART_TXD, When I run the project I can see message "Hello World" in hyperterminal.  The problem is when I try to configure RX with a signal called HC_UART_RXD, because the FPGA port of this signal is share with another signal called ~ALTERA_nCEO~. And I don't know how I can remove this error.   Error: Can't place pins assigned to pin location Pin_E18 (IOPAD_X53_Y21_N14)  Info: Pin HC_UART_RXD is assigned to pin location Pin_E18 (IOPAD_X53_Y21_N14)  Info: Pin ~ALTERA_nCEO~ is assigned to pin location Pin_E18 (IOPAD_X53_Y21_N14)

[Altera_Forum]

Go to Device and Pin Options and set nCEO to be used as regular IO after config.

[Altera_Forum]

TO_BE_DONE

[Altera_Forum]

Have you also set those pins to used as regular IO after config? Most of them come under Other Active Parallel pins

[Altera_Forum]

I've done this, 

 nCEO --> from programming pin --> to regular I/O other active parallel pins --> from programming pin --> to regular I/O  data[7..2] --> from input tristated --> to regular I/O  Compilation was successful

[Altera_Forum]

compilation was successful, thanks a lot!!!!!! 

 best regards