I have two versions of a dll that I've developed. Both of these versions are visible in the object browser. In the Add References Dialog .NET tab, only the first version is visible, but it is listed twice. No matter how I select the second version (browsing or recent tab), the first version is always added to the project. Also, I have several projects in a solution, and one of the projects has the newer version in its references. The difference, I believe, is that the problem projects at one time had the older version as a reference and the one without the problem never did. Any ideas?