...
ConnectSAP2000v18andETABS2015Launch.exe
For previous version SAP2000v17 to ETABS v15:
ConnectSAP2000v17andETABS2015Launch.exe
...
ConnectSAP2000v18andETABS2015Launch.exe
For previous version SAP2000v17 to ETABS v15:
ConnectSAP2000v17andETABS2015Launch.exe