[ns] EDCA-MAC/802_11e for ns-2.28 simulation problem

Hi all I wants to simulate patch EDCA MAC/802.11e for ns-2.28. When i run tcl script the following error occurs. Same problem discussed from many people on forums but no solution is present on web Please help me why this error occur. Best Regards Moazzam

[ns] Last Week: IEEE ICC 2012's 3rd Workshop SaCoNet, Jun, 2012, Ottawa, Canada

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