In the Extra Projects dialog, made the default button be Add. Resolves relative paths correctly. Resolves environment variables in any filename. DSP and DSW files let you use absolute environment paths. Microsoft just doesn't tell you about it.
Removes duplicate filenames.
Double selection bug in Workspace File dialog fixed. Version 1.55 Cleaned up the source code. Added Find Identifier At Cursor, Find Next Identifier, and Find Previous Identifier. Version 1.51 Dramatic speed improvement in the Workspace Find Identifier addin. Second public source code release.