Using rm v 1.8 under windows 7-64 i've got the following error while i try to export to google earth please help

Could not load file or assembly 'System, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e, Retargetable=Yes' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)


at #=q0t_C1Zif5v3MvmrcPi3dLOsn3_9ln08AQ5yHBxxelsqMx6K1Wrh0rvMi8nvchR$n.#=qvjYJx889Ti5$w8MWNlexVQ==()
at #=qDYuzuZbPv1$$YU2k5R8Qi7sGU1IUAVblLifHEksba4Ix7zj7bTQDjzrDZ0poX3EM.#=qvjYJx889Ti5$w8MWNlexVQ==(IEnumerable`1 #=qb68iBebAaWeodW4z1qVUYA==, dje_q87SXGHSDAQSD7C9SQASWDUXTNUQ3WYD3P53MEK4GL8F8ZSTXGY9KWNB9H7NGPNNMAWEU7YR9VPEZD_ejd #=q_w7hFZwEaRGUhw3CvH8_1g==, #=qmAdFKNfT9g6VS6qOBRMqOSS1DonXtCy7NPLbQSbbivn$OdvYiBkubWE1ipww3Pzi #=qntF$iHcEXTWqPsjCB2mRAQ==)

Please reinstall/repair your Microsoft .NET 4.5 installation and see if the problem persists. We have seen this issue a few times and this has usually been the cause.