Continuous warnings generated in LOG file

Hi ,
On activating OPC UA, I am getting continuous WARN in wrapper log file of Ignition every 5 seconds 3kb of this message is continuously appended in the log file every 5 seconds. How to get rid of is, what is wrong with the installation (Ignition 7.7.8 , 64 bit version on windows 10 system).
regards
Prafull

INFO | jvm 1 | 2016/04/27 19:29:23 | WARN [ReadService ] [19:29:23,515]: Returning ServiceFault for request: com.inductiveautomation.opcua.types.messages.ReadRequest@1f7f6bda. StatusCode=StatusCode[Severity=Bad, Subcode=Bad_SessionIdInvalid]
INFO | jvm 1 | 2016/04/27 19:29:23 | WARN [OpcUaConnection[Ignition OPC-UA Server]] [19:29:23,515]: Error reading server time and state: ServiceFault: StatusCode[Severity=Bad, Subcode=Bad_SessionIdInvalid]
INFO | jvm 1 | 2016/04/27 19:29:23 | StatusCode[Severity=Bad, Subcode=Bad_SessionIdInvalid]: ServiceFault: StatusCode[Severity=Bad, Subcode=Bad_SessionIdInvalid]
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.client.stack.TCPClientChannel.validateResponseType(TCPClientChannel.java:832)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.client.stack.TCPClientChannel.receiveMessage(TCPClientChannel.java:793)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.common.stack.UAChannel$1DeliverMessage.deliver(UAChannel.java:967)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.common.stack.UAChannel$DeliverToDelegate.run(UAChannel.java:1599)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.client.stack.SerialExecutionQueue$RunnableExecutor.execute(SerialExecutionQueue.java:100)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.client.stack.SerialExecutionQueue$RunnableExecutor.execute(SerialExecutionQueue.java:97)
INFO | jvm 1 | 2016/04/27 19:29:23 | at com.inductiveautomation.xopc.client.stack.SerialExecutionQueue$PollAndExecute.run(SerialExecutionQueue.java:75)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.FutureTask.run(FutureTask.java:266)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:180)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
INFO | jvm 1 | 2016/04/27 19:29:23 | at java.lang.Thread.run(Thread.java:745)

It seems the session has timed out underneath the client. This can happen on laptops, for example, when waking from sleep. If you just edit/save the OPC-UA connection it will reset.

Yes Indeed, it stopped generating the warnings!

The System was running fine at about 4PM the I put the Laptop on sleep mode and whne I restarted it, the warning started generating! But I had not stared the OPC Client application! Which client underneath is causing this I don’t know!

regards
Prafull

Also ever since I installed the OPC UA License Key received by Mail, replacing the previously entered Developer mode License Key, generated on the module developer page, I am getting the BUILD FAILED error for my module (NON OPC Module):

C:\Ignition-ModuleSDK-7.7.8\gatewaycomm\Build\build.xml:83: java.io.FileNotFoundException: localhost:8088/main/system/Devel … ingServlet

Previously I was getting this error when I had not entered the Developer License Key on developer portal.

Does the OPC UA License key not include Developer Key?

regards
Prafull

It doesn’t, developer mode is only enabled on developer licenses.

Then How do I enable both (i.e. developer license as well as OPC UA license)?
regards

I guess I should use developer key when I am developing the module and then once the module is deployed, I can USE OPC UA Key when I am need OPC UA connectivity. I wish there was a way to keep OPC UA key enabled when Developer key is active.
regards
prafull