Error EX0 on Main index,

[kyle Johnson_426772]

Heyya! 

So the quicky question i wanted to ask was, is there a way to manually re cache the templates, or rebuild them? 
As the ​reason being: 

After copying files+DB from my main site to a secondary section to test out 4.0, I have been experiencing an issue where everytime you go to the indexyou receive an error, refreshing/trying to return to the index 
 

The Error in question is : 

exception 'ErrorException' with message 'template_store_missing' in /home/stevenbi/public_html/beta/system/Theme/Theme.php:546
Stack trace:
#0 /home/stevenbi/public_html/beta/system/Theme/Theme.php(558) : eval()'d code(326): IPS\_Theme->getTemplate('listing', 'cms', 'database')
#1 [internal function]: IPS\Theme\class_cms_front_widgets->LatestArticles(Object(IPS\cms\Databases), Object(IPS\Patterns\ActiveRecordIterator), 'horizontal')
#2 /home/stevenbi/public_html/beta/system/Widget/Widget.php(214): call_user_func_array(Array, Array)
#3 /home/stevenbi/public_html/beta/applications/cms/widgets/LatestArticles.php(93): IPS\_Widget->output(Object(IPS\cms\Databases), Object(IPS\Patterns\ActiveRecordIterator))
#4 /home/stevenbi/public_html/beta/system/Widget/Widget.php(695): IPS\cms\widgets\_LatestArticles->render()
#5 /home/stevenbi/public_html/beta/system/Theme/Theme.php(558) : eval()'d code(9582): IPS\_Widget->__toString()
#6 /home/stevenbi/public_html/beta/system/Theme/Theme.php(558) : eval()'d code(3374): IPS\Theme\class_core_front_global->widgetContainer('header', 'horizontal')
#7 /home/stevenbi/public_html/beta/system/Dispatcher/Dispatcher.php(149): IPS\Theme\class_core_front_global->globalTemplate('a37bb437beb1755...', '\t\t\t\t\n
finish()
#9 /home/stevenbi/public_html/beta/system/Dispatcher/Front.php(405): IPS\Dispatcher\_Standard->finish()
#10 /home/stevenbi/public_html/beta/system/Dispatcher/Dispatcher.php(131): IPS\Dispatcher\_Front->finish()
#11 /home/stevenbi/public_html/beta/index.php(13): IPS\_Dispatcher->run()
#12 {main}

Which is refering to 

public function getTemplate( $group, $app=NULL, $location=NULL )
{
/* Do we have an application? */
if( $app === NULL )
{
$app = \IPS\Dispatcher::i()->application->directory;
}
 
/* How about a template location? */
if( $location === NULL )
{
$location = \IPS\Dispatcher::i()->controllerLocation;
}
 
$key = \strtolower( 'template_' . $this->id . '_' . static::makeBuiltTemplateLookupHash( $app, $location, $group ) . '_' . static::cleanGroupName( $group ) );
 
/* Still here */
/* We cannot use isset( static::$calledTemplates[ $key ] ) here because it fails with NULL while in_array does not */
if ( !in_array( $key, array_keys( static::$calledTemplates ) ) )
{
/* If we don't have a compiled template, do that now */
if ( !isset( \IPS\Data\Store::i()->$key ) )
{
$this->compileTemplates( $app, $location, $group );
}
 
/* Still no key? */
if ( ! isset( \IPS\Data\Store::i()->$key ) )
{
\IPS\Log::i( LOG_WARNING )->write( "Template store key: {$key} missing ({$app}, {$location}, {$group})", "template_store_missing" );
 
throw new \ErrorException('template_store_missing');
}

Thanks! 
it's got me beat how to do it/if you can 

[kyle Johnson_426772]

I have tried to Create a new theme hoping that would work, however the issue is still present 

[bfarber]

You can try clearing the datastore folder on disk or the core_store table in your mysql database (depending upon where you store your "store" data per your ACP configuration), however if you can give us step by step instructions to follow in order to reproduce this issue that would be helpful so we can just resolve the problem itself.

[kyle Johnson_426772]

I'll give that a Try. 

As for reproducing this error This is what I did: 

I wanted to Test it out using a copy'ed Database+files and upgrade from 3.4.5.
First I copy'ed the SQL DB for the site and put the data in a new DB, then I Did the same with the files without any additions/edits, I tested it out to make sure that it was a 1:1 copy before hand. 
Then I simply upgraded it with 4.0, Converted the SQL tables and such. 
That's pretty much what I did. 

The error string appears at random it seams, as simply refreshing the page/ Clicking a redirect Link to the same page (Main Index) Removes the error. 

Also I don't know if its Related, but on the ACP all the "background Task's" Stay Hanging.

 http://i.imgur.com/3NWYwpI.png 

[kyle Johnson_426772]

Unfortunately I tried those suggestions, However the error still appears. 

As i was saying, it only appears the first time you Load the Index, and goes away after you refresh/renew the page 

Is there anything else i could try? Only thing I could think of would be to redo what I have currently done