What steps will reproduce the problem? 1. Create a .proto file somewhere in the file system, but not inside an Eclipse workspace. 2. Create a file in an Eclipse project, and import the external file (created in #1.) 3. Ctrl+Click the import statement to open the external file. 4. Close and open Eclipse 5. NPE!

What is the expected output? What do you see instead? Eclipse should show the external file in an editor.

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