The folder '<folder>' already exists

Each item in a VSS project must have a unique name. This error has the following causes and solution:

• You have attempted to name a file or an immediate child project with the same name as the project. (An item with that name can exist in other projects in the database, including subprojects.)
  
  
• You are using both a 16-bit version and a 32-bit version of VSS for the same project and file names are not being mapped accurately.

  To resolve this error, give the new item a different, unique file name. Or, you can delete or rename the existing item.

Note   File and project names in VSS are not case-sensitive. For example, if you have a file named Test.C, you cannot create a subproject or file named "Test.c" or "test.c" in the same project.