Unable to load template file 'template.tpl''

[Demonwolf37]

After following this tip (http://www.mysidiaadoptables.com/for...ead.php?t=4763) to remove the blank page error, I'm now getting this error, which is very straining on the eyes and quite beyond me.

Fatal error: Uncaught exception 'SmartyException' with message 'Unable to load template file 'template.tpl'' in /home/summonad/public_html/inc/smarty/sysplugins/smarty_internal_templatebase.php:127 Stack trace: #0 /home/summonad/public_html/inc/smarty/sysplugins/smarty_internal_templatebase.php(374): Smarty_Internal_TemplateBase->fetch('template.tpl', NULL, NULL, NULL, true) #1 /home/summonad/public_html/classes/class_template.php(135): Smarty_Internal_TemplateBase->display('template.tpl') #2 /home/summonad/public_html/classes/class_view.php(280): Template->output() #3 /home/summonad/public_html/classes/class_frontcontroller.php(102): View->render() #4 /home/summonad/public_html/index.php(74): FrontController->render() #5 /home/summonad/public_html/index.php(78): IndexController::main() #6 {main} thrown in /home/summonad/public_html/inc/smarty/sysplugins/smarty_internal_templatebase.php on line 127

I seem to be getting errors everywhere, actually, but that's besides the point... On the Login page, I'm getting this error, even though the phrase 'AppController' does indeed appear on line 3.

Fatal error: Class 'AppController' not found in /home/summonad/public_html/login.php on line 3
________

I have very limited coding skills, and my coding expert does not know php very well. If I'm having this much trouble just getting the site set up, I'm worried I won't be able to make a site at all. It's been a very trying and discouraging first day, so I'd appreciate some feedback.