[ns] [help]invalid command name ...

[yunqiluo_1@126.com]

Dear all;
 
           I try to add CSFQ to ns-2.29. and I followed the step by step with the instruction of http://www.cs.cmu.edu/~istoica/csfq/   very careful.   
 
           At first, I am sure my ns-2.29 is work well. The  problem only comes after I add the CSFQ algrithm. 
 
        
           It failed with these messages:
 
 
[root at localhost ns-2.29]# ns
ns:
[code omitted because of length]
: invalid command name "Queue/CSFQ"
    while executing
"Queue/CSFQ set id_ 0"
[root at localhost ns-2.29]#

 
          Is there anybody who could help me? or give me some hints?
 
         Thank you very much!!
 
         Best regards!
 
                                                                          Linda