I found a couple of posts on here relating to my issue, and although so close to my situation, no solutions are available for me.

Like others, I have a huge problem with the resolver dialog popping up while trying to build automatically. Technically however, it should not be a problem as the search paths should be specified right? well it is, the assembly always failing to resolve is System.Runtime.Serialization version, and it can be found in the same directory as other assemblies that are being resolved perfectly ok.

In fact, when I used the dialog to browse for the assembly, I navigate to the directory I specified in the search /PATHS, locate the assembly and go, all is good- so why is it having this trouble initially with this assembly?