P.s.3: Little bit different exception log from next try, I'd like to point at this line "Microsoft.Crm.Sandbox.CrmExceptions.CrmSandboxStartStopException: The Sandbox Host has not completed initialization":
Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: The Sandbox Host has not completed initializationDetail:
<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">
<ActivityId>a8a2a688-5693-4bb8-ade1-d819d76ea180</ActivityId>
<ErrorCode>-2147204722</ErrorCode>
<ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />
<Message>The Sandbox Host has not completed initialization</Message>
<Timestamp>2018-01-04T16:02:22.9725026Z</Timestamp>
<ExceptionRetriable>true</ExceptionRetriable>
<ExceptionSource>HostStartStop</ExceptionSource>
<InnerFault i:nil="true" />
<OriginalException>Microsoft.Crm.Sandbox.CrmExceptions.CrmSandboxStartStopException: The Sandbox Host has not completed initialization
at Microsoft.Crm.Sandbox.SandboxHost.ValidateInputs(SandboxCallInfo callInfo, IExecutionContext requestContext, Guid pluginAssemblyId, Int32 sourceHash, String assemblyName, Guid pluginTypeId, String pluginTypeName, String assemblyContents, SandboxTracker tracker)
at Microsoft.Crm.Sandbox.SandboxHost.ExecuteAndReturnTraceInfo(SandboxCallInfo callInfo, SandboxPluginExecutionContext requestContext, Guid pluginAssemblyId, Int32 sourceHash, String assemblyName, Guid pluginTypeId, String pluginTypeName, String pluginConfiguration, String pluginSecureConfig, String assemblyContents, Boolean returnTraceInfo)</OriginalException>
<TraceText i:nil="true" />
</OrganizationServiceFault>
Server stack trace:
at System.ServiceModel.Channels.ServiceChannel.HandleReply(ProxyOperationRuntime operation, ProxyRpc& rpc)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan timeout)
at System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean oneway, ProxyOperationRuntime operation, Object[] ins, Object[] outs)
at System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCallMessage methodCall, ProxyOperationRuntime operation)
at System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Microsoft.Crm.Sandbox.ISandboxHost.ExecuteAndReturnTraceInfo(SandboxCallInfo callInfo, SandboxPluginExecutionContext requestContext, Guid pluginAssemblyId, Int32 sourceHash, String assemblyName, Guid pluginTypeId, String pluginTypeName, String pluginConfiguration, String pluginSecureConfig, String assemblyContents, Boolean returnTraceInfo)
at Microsoft.Crm.Sandbox.SandboxPlugin.Execute(SandboxClient client, SandboxCallTracker callTracker, IExecutionContext requestContext, String assemblyContents, Boolean returnTraceInfo)
at Microsoft.Crm.Sandbox.SandboxCodeUnit.Execute(IExecutionContext context)