File in solution explorer cannot be located if solution folder is never expanded.

1. Open attached solution.
2. Open the file Class1.cs from Subfolder/ClassLibrary1.
3. Collapse the folder Subfolder and restart Visual Studio
4. After restart, the file Class1.cs is open in IDE. Try invoke the command LocateInSolExplorer.

Expected behaviour: File is located. Current behaviour: File is not located, message "The operation could not be comlpleted" is displayed.

CodeRush (pro), RefactorPro! Dx 11.1.4, VS 2010, Vista 32 bit, DX_LocateInSolutionExplorer_1732

I get: "The operation could not be completed. Unspecified error" twice, but the file is located in the end