Error opening team sql data source on OSx El Capitan

Any idea what causes this? It happens after autnentication, when he goes from local session list to team session list in the navigation pane.

System.NullReferenceException: Object reference not set to an instance of an object
at System.Data.SqlClient.SqlDataReader.GetValues (System.Object[] values) <0x18da3438 + 0x00051> in <filename unknown>:0
at System.Data.ProviderBase.DataReaderContainer+CommonLanguageSubsetDataReader.GetValues (System.Object[] values) <0x18da3410 + 0x0001f> in <filename unknown>:0
at System.Data.ProviderBase.SchemaMapping.LoadDataRow () <0x18da3270 + 0x00020> in <filename unknown>:0
at System.Data.Common.DataAdapter.FillLoadDataRow (System.Data.ProviderBase.SchemaMapping mapping) <0x18da2dc8 + 0x00127> in <filename unknown>:0
at System.Data.Common.DataAdapter.FillFromReader (System.Data.DataSet dataset, System.Data.DataTable datatable, System.String srcTable, System.Data.ProviderBase.DataReaderContainer dataReader, Int32 startRecord, Int32 maxRecords, System.Data.DataColumn parentChapterColumn, System.Object parentChapterValue) <0x18d9aa28 + 0x000ef> in <filename unknown>:0
at System.Data.Common.DataAdapter.Fill (System.Data.DataSet dataSet, System.String srcTable, IDataReader dataReader, Int32 startRecord, Int32 maxRecords) <0x18d9a570 + 0x001f3> in <filename unknown>:0
at System.Data.Common.DbDataAdapter.FillInternal (System.Data.DataSet dataset, System.Data.DataTable[] datatables, Int32 startRecord, Int32 maxRecords, System.String srcTable, IDbCommand command, CommandBehavior behavior) <0x18d9a1a8 + 0x00113> in <filename unknown>:0
at System.Data.Common.DbDataAdapter.Fill (System.Data.DataSet dataSet, Int32 startRecord, Int32 maxRecords, System.String srcTable, IDbCommand command, CommandBehavior behavior) <0x18d99ee8 + 0x0019f> in <filename unknown>:0
at System.Data.Common.DbDataAdapter.Fill (System.Data.DataSet dataSet) <0x18d99d48 + 0x00093> in <filename unknown>:0
at A.c1b7e8caf3fa8e5fb77cc57c00e8d5e1c.cf7143f4d0ccb8590178f208ae12c1b10 (System.String c0543ca550f15febd1b069e16fd4b95e1, System.Data.IDbDataParameter[] c91084b2aae54f62d01e2a4664a847bd7) <0x18d87970 + 0x000bd> in <filename unknown>:0
at Devolutions.RemoteDesktopManager.Business.DataSources.SQLServerConnectionDataSource.c1e3e098748c6efd7f005032d264f60b2 () <0x18d87780 + 0x00167> in <filename unknown>:0
at A.cbbb560bfd0154564f3a0626f8038689f.cca44e7b409894de57ef01c51d223624f (A.c323b374042cd3040715f1835f9a00a5c c575f8eb13de2147c285404f8805d1720) <0x10773478 + 0x00258> in <filename unknown>:0