[SOLVED] Urgent! blank screen when changing a preference

[carplu]

Hi

 

I have updated a prestashop site and am in maintanence mode

 

when i want to change a preference like changing the number of products for comparison i get a blank screen

 

What is causing this?

 

Please help 

[PSfever.com]

Please turn the DEBUG mode on then an error msg should appear. Nothing that we can do unless we get PHP error..

[carplu]

and where do i do that?

[carplu]

Found it:

 

here is the error

 

 

 

Fatal error: Uncaught exception 'UnexpectedValueException' with message 'RecursiveDirectoryIterator::__construct(/home/wearforl/domains/wearforlove.com/public_html/cache/smarty/compile/bf): failed to open dir: Permission denied' in /home/wearforl/domains/wearforlove.com/public_html/tools/smarty/sysplugins/smarty_internal_utility.php:233 Stack trace: #0 [internal function]: RecursiveDirectoryIterator->__construct('/home/wearforl/...', 0) #1 /home/wearforl/domains/wearforlove.com/public_html/tools/smarty/sysplugins/smarty_internal_utility.php(233): RecursiveDirectoryIterator->getChildren() #2 /home/wearforl/domains/wearforlove.com/public_html/tools/smarty/Smarty.class.php(1360): Smarty_Internal_Utility::clearCompiledTemplate(NULL, NULL, NULL, Object(Smarty)) #3 /home/wearforl/domains/wearforlove.com/public_html/classes/Tools.php(2600): Smarty->clearCompiledTemplate() #4 /home/wearforl/domains/wearforlove.com/public_html/classes/Tools.php(2610): ToolsCore::clearCompile(Object(Smarty)) #5 /home/wearforl/domains/wearforlove.co in /home/wearforl/domains/wearforlove.com/public_html/tools/smarty/sysplugins/smarty_internal_utility.php on line 233

[carplu]

OK Solved

 

i emptied cache and it works

[vekia]

hello

thank you for information where the problem was and how you solved it

i marked your answer as a solution and whole topic as solved

with regards

Milos