Ref. post # 28
The result you get, looks like ns version 2.34 is used.
The text means :
Looks like you by mistake are using a binary ns from ns-2.34.
The right version is the "ns hcca" binary from ns-2.29/.
You can have as many versions of ns-allinone-2.xx as you want,
installed at the same time. But : Do not add any of them to a *PATH.