Altera Monitor Program Error in Win8

After extracting the zip (I've tried using windows, 7-zip, and Cygwin 'unzip'), if I open cygwin in the quartus directory and try typing gcc and pressing enter, nothing happens - the command silently fails. In the version that came with the quartus download gcc commands work as expected except for the FAST_CWD warning.

One thing I notice is that when I start the patched cygwin I see this:

"

Your group is currently "mkpasswd". This indicates that your

gid is not in /etc/group and your uid is not in /etc/passwd.

The /etc/passwd (and possibly /etc/group) files should be rebuilt.

See the man pages for mkpasswd and mkgroup then, for example, run

mkpasswd -l [-d] > /etc/passwd

mkgroup -l [-d] > /etc/group

Note that the -d switch is necessary for domain users."

Which was not happening on the unpatched version.

Edit:

I tried the commands it suggested and that got rid of the messages but hasn't fixed gcc.