Hi there!

Sorry for starting another "theme install problem" thread but my problem doesn't seem to be covered by the existing threads. I am fairly new to Silverstripe and started to run it with MAMP on my Mac. Everything went fine and I was also able to download new themes, put them into the themes folder, change /mysite/_config.php and voila the new theme was shown.

Now I did install Silverstripe on a websever. The installation process went fine and I can use both the tutorial theme and also the blackcandy theme by changing _config.php respectively. If I download another theme though, upload it to the themes folder and change _config.php I will just get a blank site this happens no matter theme I choose apart from 'tutorial' and 'blackcandy'. It even happens if I copy all 'blackcandy' subfolders and files into a new folder calles mytheme in the themes folder and change _config.php respectively. So it is not a problem of the subfolder structure or the .ss files but rather a problem of the server not fiinding the themes in general. This there anything else I need to refresh or change apart from -config.php

Sorry for such a dump question but I am still a newbie in this regard.
Cheers,
Torsten

Just some more information:
I tried to use theme 'BrightSide'

In the themes folder I have the following subfolders as downloaded from the web:

BrightSide1
BrightSide1_blog
BrightSide1_ecommerce
BrightSide1_forum

So I changed /mysite/_config.php to 'BrightSide1' and while Safari just shows a blank site, Firefox returns the following which doesn't mean much to me but hopefully to someone of you:

Source

166 					$this->chosenTemplates['main'] = $this->chosenTemplates[$templateFolder];
167 					unset($this->chosenTemplates[$templateFolder]);
168 				}
169 			}
170 
171 			if(isset($_GET['debug_request'])) Debug::message("Final template selections made: " . var_export($this->chosenTemplates, true));
172 
173 		}
174 
175 		if(!$this->chosenTemplates) user_error("None of these templates can be found: ". implode(".ss, ", $templateList) . ".ss", E_USER_WARNING);
176 
177 		parent::__construct();
178 	}
179 	
180 	/**
181 	 * Returns true if at least one of the listed templates exists

Trace

    * None of these templates can be found: Page.ss, ContentController.ss
      Line 175 of SSViewer.php
    * SSViewer->__construct(Array)
      Line 305 of Controller.php
    * Controller->getViewer(index)
      Line 172 of Controller.php
    * Controller->handleAction(HTTPRequest)
      Line 129 of RequestHandler.php
    * RequestHandler->handleRequest(HTTPRequest)
      Line 119 of Controller.php
    * Controller->handleRequest(HTTPRequest)
      Line 29 of ModelAsController.php
    * ModelAsController->handleRequest(HTTPRequest)
      Line 44 of RootURLController.php
    * RootURLController->handleRequest(HTTPRequest)
      Line 280 of Director.php
    * Director::handleRequest(HTTPRequest,Session)
      Line 121 of Director.php
    * Director::direct(/)
      Line 118 of main.php

Did you flush the cache? http://doc.silverstripe.org/doku.php?id=tutorial:1-building-a-basic-site&s=flush#templates

No! :embarrassment: I just tried and now it works. Thank you so much. I should better read the manual more carefully before I post next time.

Best,
Torsten

I'm having a similar problem. I've launched a production SS site before so I have an intermediate to advanced knowledge of what I'm doing. When I try to switch to a theme and flush the cache, using either 1 or all, I get this error:

[Warning] None of these templates can be found: Page.ss, ContentController.ss
GET /?flush=1

Line 175 in /var/www/vhosts/domain.com/subdomains/subdomain/httpdocs/sapphire/core/SSViewer.php
Source

166 					$this->chosenTemplates['main'] = $this->chosenTemplates[$templateFolder];
167 					unset($this->chosenTemplates[$templateFolder]);
168 				}
169 			}
170 
171 			if(isset($_GET['debug_request'])) Debug::message("Final template selections made: " . var_export($this->chosenTemplates, true));
172 
173 		}
174 
175 		if(!$this->chosenTemplates) user_error("None of these templates can be found: ". implode(".ss, ", $templateList) . ".ss", E_USER_WARNING);
176 
177 		parent::__construct();
178 	}
179 	
180 	/**
181 	 * Returns true if at least one of the listed templates exists

Trace

    * None of these templates can be found: Page.ss, ContentController.ss
      Line 175 of SSViewer.php
    * SSViewer->__construct(Array)
      Line 305 of Controller.php
    * Controller->getViewer(index)
      Line 172 of Controller.php
    * Controller->handleAction(HTTPRequest)
      Line 129 of RequestHandler.php
    * RequestHandler->handleRequest(HTTPRequest)
      Line 119 of Controller.php
    * Controller->handleRequest(HTTPRequest)
      Line 29 of ModelAsController.php
    * ModelAsController->handleRequest(HTTPRequest)
      Line 44 of RootURLController.php
    * RootURLController->handleRequest(HTTPRequest)
      Line 280 of Director.php
    * Director::handleRequest(HTTPRequest,Session)
      Line 121 of Director.php
    * Director::direct(/)
      Line 118 of main.php

The Page.ss does exist in the template directory. I'm mystified... I really liked SS in the beginning but all these new problems are driving me towards Ruby on Rails instead.

What is the name of your theme? Make sure its all lowercase and no underscores. Like 'mytheme' then SSViewer::set_theme('mytheme'); and make sure you ?flush=1.

Thanks Willr. That fixed it... sort of. My theme had dashes and an underscore. D'oh!

Anyway after I fixed that and ran a flush, I got this error when trying to login to the admin:

[Warning] None of these templates can be found: Security_Security.ss, Security.ss
POST /directory/Security/Security/LoginForm

Line 175 in /Applications/MAMP/htdocs/directory/sapphire/core/SSViewer.php
Source

166 					$this->chosenTemplates['main'] = $this->chosenTemplates[$templateFolder];
167 					unset($this->chosenTemplates[$templateFolder]);
168 				}
169 			}
170 
171 			if(isset($_GET['debug_request'])) Debug::message("Final template selections made: " . var_export($this->chosenTemplates, true));
172 
173 		}
174 
175 		if(!$this->chosenTemplates) user_error("None of these templates can be found: ". implode(".ss, ", $templateList) . ".ss", E_USER_WARNING);
176 
177 		parent::__construct();
178 	}
179 	
180 	/**
181 	 * Returns true if at least one of the listed templates exists

Trace

    * None of these templates can be found: Security_Security.ss, Security.ss
      Line 175 of SSViewer.php
    * SSViewer->__construct(Array)
      Line 305 of Controller.php
    * Controller->getViewer(Security)
      Line 172 of Controller.php
    * Controller->handleAction(HTTPRequest)
      Line 129 of RequestHandler.php
    * RequestHandler->handleRequest(HTTPRequest)
      Line 119 of Controller.php
    * Controller->handleRequest(HTTPRequest)
      Line 280 of Director.php
    * Director::handleRequest(HTTPRequest,Session)
      Line 121 of Director.php
    * Director::direct(/Security/Security/LoginForm)
      Line 118 of main.php

ok perhaps rather than doing a ?flush=1 try a ?flush=all on that page - site.com/Security/login?flush=all which will flush all the templates not just the current one. If you haven't defined a Security.ss file then it should default back to the standard without any issues.

I tried that already, and did so again after reading your reply. Still the same result.