Hi Robin,
Yes, the lin_stack is the middleware I was referring to. RTM 4.0.3 included ldf relative path improvements, as well as fixes to the parser itself (The node configuration gui in 4.0.1 indicates parsing errors for my ldf that 4.0.3 does not).
I was hoping to upgrade to the latest design studio, but if there are no plans to include the updates to the lin_stack peripheral tool in DS 3.5, I will have to stick with DS 3.4.
Thank you for the prompt response.