Installed git and git annex precisely as directed on my Windows 7 system, but 'git annex test' fails with above mentioned error - as if it's not been installed.
I tried uninstalling and reinstalling

These are the contents of my git directory (from git bash prompt):

-rw-r--r--    1 iainso   Administ      708 Dec 17 21:23 Git Bash.vbs

-rw-r--r--    1 iainso   Administ    46106 Dec 17 21:23 ReleaseNotes.rtf

drwxr-xr-x  147 iainso   Administ    40960 Jan 29 14:44 bin

drwxr-xr-x   51 iainso   Administ    12288 Jan 29 16:10 cmd

drwxr-xr-x    3 iainso   Administ        0 Jan 29 14:44 doc

drwxr-xr-x   13 iainso   Administ     4096 Jan 29 14:44 etc

-rw-r--r--    1 iainso   Administ      103 Jan 28 18:38 git-annex-autostart.vbs

-rw-r--r--    1 iainso   Administ   232368 Jan 28 18:38 git-annex-licenses.txt

-rwxr-xr-x    1 iainso   Administ    49799 Jan 29 16:10 git-annex-uninstall.exe

-rw-r--r--    1 iainso   Administ       88 Jan 28 18:38 git-annex-webapp.vbs

drwxr-xr-x    4 iainso   Administ        0 Jan 29 14:44 git-cheetah

drwxr-xr-x   11 iainso   Administ     4096 Jan 29 14:44 lib

drwxr-xr-x    3 iainso   Administ        0 Jan 29 14:43 libexec

drwxr-xr-x    9 iainso   Administ        0 Jan 29 14:44 share

drwxr-xr-x    5 iainso   Administ        0 Jan 29 14:44 ssl

-rw-r--r--    1 iainso   Administ   635621 Jan 29 14:44 unins000.dat

-rwxr-xr-x    1 iainso   Administ  1244929 Jan 29 14:42 unins000.exe