SDK exception "file system limitation"?

SDK exception "file system limitation"?

Using the C# SDK, I am trying to simply call GetRecords for the Accounts module.
Usually it works fine, however occasionally it throws an exception with the message "The requested operation could not be completed due to a file system limitation"

IsSDKException is True

I am not saving anything to the filesystem at this point. Why is this happening and how can I avoid it?
It seems to happen the first time I call GetRecords after starting my program and then rarely but randomly afterwards.