What flavor of decompression error does this number convey? Based on other errors of this type in the forum, it seems like a file not found. That's odd considering that the installer is trying to install a file that's in the installer.

Could it also indicate that a folder that should have been created (but wasnt) is not available? Doesnt seem likely given that you'd expect an installer error when a \users\username\documents\foldername failed to be created.