"Index (zero based) must be greater than or equal....." error with RDM Mac connecting to SQL DB

connects ok to RDMS

connected ok to SQL DB with RDM 3.0.8.0, upgrade to 3.0.9.0 fails with this error

System.FormatException: Index (zero based) must be greater than or equal to zero and less than the size of the argument list.
at System.String.FormatHelper (System.Text.StringBuilder result, IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0
at System.String.Format (IFormatProvider provider, System.String format, System.Object[] args) [0x00000] in <filename unknown>:0
at System.String.Format (System.String format, System.Object arg0, System.Object arg1, System.Object arg2) [0x00000] in <filename unknown>:0
at Devolutions.RemoteDesktopManager.Business.DataSources.SQLServerConnectionDataSource.get_ConnectionString () [0x00000] in <filename unknown>:0
at A.c1b7e8caf3fa8e5fb77cc57c00e8d5e1c.cca0eebd260bd0ffa8a352541f64ed803 (Int32 c67e9c21103cd2b9f8292ebe097187126) [0x00000] in <filename unknown>:0
at A.c1b7e8caf3fa8e5fb77cc57c00e8d5e1c.cf7143f4d0ccb8590178f208ae12c1b10 (System.String c0543ca550f15febd1b069e16fd4b95e1, System.Data.IDbDataParameter[] c91084b2aae54f62d01e2a4664a847bd7) [0x00000] in <filename unknown>:0
at Devolutions.RemoteDesktopManager.Business.DataSources.SQLServerConnectionDataSource.c1e3e098748c6efd7f005032d264f60b2 () [0x00000] in <filename unknown>:0
at A.cbbb560bfd0154564f3a0626f8038689f.cca44e7b409894de57ef01c51d223624f (A.c323b374042cd3040715f1835f9a00a5c c575f8eb13de2147c285404f8805d1720) [0x00000] in <filename unknown>:0