Locate file error in SES when using the thread_mqttsn_publisher example

[morerook]

I am using the nRF 15.2 SDK for Thread and Zigbee. I am currently trying to use the debugger in SES, but when I upload the code, SES complains that it can't find the source file for various openthread files. This doesn't occur for other examples that don't use Thread. Closing these windows just opens more windows complaining that the files cannot be found. The example compiles just fine. I have not made any changes to the code. 

[morerook]

Thank you! It would have been good to know that as a comment in the code or otherwise.