I deleted the directory a few times now. if I go to add theme solaris is not there. if I go to export. if say it has no theme and to create one, so I click on create. copy the info that is in the zip file for theme_info.cfg. I get this
The exporter could not write the theme information file. Click the button below to download this file with your browser. Once you have downloaded it you can transfer it to the directory containing the template files. You can then package the files for distribution or use elsewhere if you desire
going to management I see it is in there. so I go to profile to select it and click on submit and get this
phpBB : Critical Error
Could not open Solaris template config file
Line : 288
File : /opt/phpBB2/includes/functions.php
People have successfully installed this template in RC versions of phpBB2. It's certainly doable in any version. Never had any problems myself.
BTW, install.tpl is only used for the board installation script.