node connection in block design file

--- Quote Start ---

dear friends

i have created block design file in this block design file when i connect bus to several nodes using aliases it gives,error is given below

error: node "l0" is missing source

error: node "l1" is missing source

error: node "l2" is missing source

error: node "l4" is missing source

error: node "l5" is missing source

error: node "l6" is missing source

error: node "l7" is missing source

error: node "l8" is missing source

error: node "l9" is missing source

error: node "l10" is missing source

error: node "l11" is missing source

error: node "l12" is missing source

error: node "l13" is missing source

error: node "l14" is missing source

error: node "l15" is missing source

error: node "l3" is missing source

error: quartus ii analysis & synthesis was unsuccessful. 16 errors, 23 warnings

error: peak virtual memory: 172 megabytes

error: processing ended: thu oct 16 10:05:01 2008

error: elapsed time: 00:00:05

error: total cpu time (on all processors): 00:00:04

error: quartus ii full compilation was unsuccessful. 18 errors, 23 warnings

i am trying to connect these nodes to bus (led_bus) with alias l[21..0]

hareesha

--- Quote End ---

Hi Hareesha,

without seeing the schematic it is difficult to say what's going wrong. I assume that you

split the bus I[21..0] into single nets and you forgot to use the brackets in the netname.

E.g I[21..0] single netnames I[21]. I[20] ....