Mark,

okay, I have checked the source code.

The UNPACK library tries to create the output file using the CreateFile Windows API. This process returned INVALID_HANDLE_VALUE.

The UNPACK library returned the following to SetupBuilder:

return -200000000 - GetLastError();

Because you received Decompression Error -200000002, I can confirm that GetLastError was ERROR_FILE_NOT_FOUND
2 (0x2) The system cannot find the file specified.

The installer always tries to create the target folder (if it does not exist). Is your path "\users\username\documents\foldername" a fully qualified pathname?

Friedrich