Forum OpenACS Q&A: Re: (Error: can't read "address": no such variable) after Install OpenACS with NaviServer from Scratch

you are probably referring to the file. This install script "knows" the version numbers from the configuration section at the begin of the script [1]. change the version number of naviserver and the modules from 4.99.11 to 4.99.12 in your downloaded version of the script, and the will get that newest version. i am currently at vacation in greece and can't update the installation script.

PS: don't run scripts on your machine without looking first, what these are doing.