When trying to unload a new module I kept getting a bank screen, and errors in sugarcrm.log. The upload uses sys_get_temp_dir() to get the temp directory and this was set outside the document root, hence the error.

But how do yo set the system temp directly? Finally I tracked it down. You need to add the following to the php.ini file. You think it would be there, commented out, like lots of other parameters.

sys_temp_dir = "/Users/gregambrose/tmp"

Obviously, restart apache.

I hope that helps somebody

Greg