Imported a the models and .vdb file for a project (i.e., Loopback) into designer under a different project name (i.e, Loopback2). When I opened the vdb editor and tried to doubleclick the souce model (just pick any model), it produced the attached doubleclick.txt error in the log file.
The cause is because the "Path" in the vdb points to a non-existent project.
Talking with Barry, what should probably happen is upon the designer opening the vdb in the editor, it should verify the paths are valid and provide an indicator when a model can't be found. And when a model is flagged as not being found, the vdbeditor shouldn't process the double click.