NiosII 10.1 Eclipse(Problem) - have you programmed the filling system into flash?

[Altera_Forum]

Good evening of Members 

 I want test the de2-115 of example   (DE2_115_WEB_SERVER_RGMII_ENET0)  but , when I Ram_as , niosII 10.1 appear the message of error  ----------------------------------------------------------------  Fetching file: /mnt/rozipfs/index.html. Can't open the 404 File Not Found error page. Have you programmed the filing system into flash? [http_handle_receive] Error preparing response  ----------------------------------------------------------------  so I reference "http://alteraforum.org/forum/showthread.php?p=115825"   and I try for renew  (New→NiosII Application and BSP from Template)  Select after of Project and Templates choose Web Server(RGMII)    Then I open Nios 10.1 Command Shell   and I enter the code:  ----------------------------------------------------------------  cd d:/demo/DE2_115_Web_Server/DE2_115_WEB_SERVER_RGMII_ENET0  mkdir flash   bin2flash --location=0x100000 --input=/software/web_server_test/system/ro_zipfs.zip --output=ro.flashfs_cfi_flash1.flash  nios2-flash-programmer.exe ro.flashfs_cfi_flash1.flash --base=0x0a800000 --sidp=0x9000140 --id=0x0 --device=1 --instance=0 --program --verbose --erase-all  ---------------------------------------------------------------- but , In the start enter "nios2-flash..."  It tell me , There are two or more JTAG cables available but you have not   chosen which one to use. please use the configuration dialog to pick one,   or specify a value for the --cable parameter on the command line.   I try very long time...but I can't solve the question...I don't know how do...  p.s sorry my English is very poor.