Thread:Project:Support desk/Problem setting up FlaggedRevs

Im having a problem with installing FlaggedRevs http://www.mediawiki.org/wiki/Extension:FlaggedRevs on my wiki.

i get up to step 4 and then im lost. I have all the files stored locally on my machine and ftp any changes using dreamweaver. when i try to get to step 4 i get an error message stating:

"You don't have permission to access /maintenance/populateSha1.php on this server."

We have the wiki sitting on a hosting site.

Can anybody help with this?