In plain English: The installer is trying to find the 32-bit English version of a specific documentation package (probably outdated MSDN or SDK help content) but cannot locate it on your disk, network, or installation media.
C:\...\toolkit documentation\x86\en-us\msi new\setup.msi setup cannot locate toolkit documentationx86enusmsi new
Or the error might be a concatenation of a variable: setup cannot locate "toolkit documentation\x86\en-us\msi new" In plain English: The installer is trying to