Same crash for me. 3 times with the same crash dump:
2021-04-17 19:42:44.027 INFO EDCORE: try to write dump information
2021-04-17 19:42:44.030 INFO EDCORE: # -------------- 20210417-194244 --------------
2021-04-17 19:42:44.030 INFO EDCORE: DCS/2.7.0.4625 (x86_64; Windows NT 10.0.17763)
2021-04-17 19:42:44.031 INFO EDCORE: C:\Program Files\Eagle Dynamics\DCS World OpenBeta Server\bin\Flight.dll
2021-04-17 19:42:44.032 INFO EDCORE: # C0000005 ACCESS_VIOLATION at 8D971AE0 00:00000000
2021-04-17 19:42:44.035 INFO EDCORE: SymInit: Symbol-SearchPath: '.;C:\Program Files\Eagle Dynamics\DCS World OpenBeta Server;C:\Program Files\Eagle Dynamics\DCS World OpenBeta Server\bin;C:\Windows;C:\Windows\system32;SRV*C:\websymbols*http://msdl.microsoft.com/download/symbols;', symOptions: 530, UserName: 'admin'
2021-04-17 19:42:44.036 INFO EDCORE: OS-Version: 10.0.17763 () 0x110-0x3
2021-04-17 19:42:44.517 INFO EDCORE: 0x00000000000C1AE0 (Flight): woATC::recalculateTaxiwaydata + 0x1D10
2021-04-17 19:42:44.517 INFO EDCORE: 0x00000000000C4E77 (Flight): woATC::setClientStatusServer + 0x707
2021-04-17 19:42:44.518 INFO EDCORE: 0x00000000000C4235 (Flight): woATC::setClientStatus + 0x35
2021-04-17 19:42:44.519 INFO EDCORE: 0x00000000000BDC00 (Flight): woATC::onMessage + 0x1400
2021-04-17 19:42:44.520 INFO EDCORE: 0x00000000000BE3F0 (Flight): woATC::onMessage + 0x130
2021-04-17 19:42:44.521 INFO EDCORE: 0x00000000000540AA (Flight): wAirbase::procClientMessage + 0x2A
2021-04-17 19:42:44.522 INFO EDCORE: 0x00000000000C9A50 (Flight): operator>> + 0x630
2021-04-17 19:42:44.523 INFO EDCORE: 0x0000000000100373 (edCore): Mail::Reader::stream + 0x1473
dcs.log