Help! My site just died
PermalinkFatal error: Class 'ImageHelper' not found in /***/***/public_html/ll_media/concrete/core/libraries/loader.php on line 309
I cleared the cache but that has rendered every page as above.
Does anyone know what the heck has happened please?

First thing I'd do though is operate on the assumption that it was likely the update (until you determin otherwise).
Do you have a backup of the packages directory with the previous version of the plugin.
I'd be tempted to revert back the the previous version just in case there was inexplicably some dependency you aren't aware of. I'd also check your error logs for more info.
The site was only partially built so it wouldn't be the end of the world to start again, but I had done a fair bit of custom work that I'd rather not repeat.
Does this error mean anything to anybody at all out there?
If I try to 'Rescan' and images in the c5's File Manager, I get the error message:
Fatal error: Class 'ImageHelper' not found in /XXXX/XXXX/public_html/ll_media/concrete/core/libraries/loader.php on line 309
Unable to rescan test_logo.jpg. Error encountered: Class 'ImageHelper' not found. Rescan halted.
I've found that if I rename any 'global-areas' on my theme's pages, the page displays ok, but obviously without the areas that were renamed.
Does this help narrow it down for anyone out there? Please help!
It would imply that you've hidden the issue,. The global area that you've renamed contains a block that is causing the issue. Renaming it is likely the same as just removing the block.
It looked to me as though the error that was showing before was related possibly to a global area containing a logo (could be very wrong) and the messsage implied there was some issue finding the image helper. Have you overridden any of the core files, changed any of the core files or added any php yourself that calls the image helper?
Still seems strange because if I rename that global-area, it shows up the same error, this time in the footer, which certainly wouldn't have held the same block-type. Also, I can't see how that might explain the inability to rescan images in file-manager, which gives the same error.
I feel like the closer I get, the further away I really am!
Thanks again.
<div class="left-col">
<div class="cell">
<a href="/" class="logo">
<div id="areaStyleEdgeLogo42" class=" ccm-area-styles ccm-area-styles-a71" >
<div id="blockStyle183Main70" class=" ccm-block-styles" >
<br />
right here is where the area occurs which looks to me where you will be calling a global area for the logo. The error would be occurring because that piece of code is calling the built in C5 image helper.
If you suppress the first Global Area and then get the same error appear in another area it will be because the same issue is occurring - the system is baulking because it cannot find the image helper for some reason.
Basically we need to know why it cannot find it and then your problem (or at least this one) is likely resolved.
Do you have ftp access to the website? If so, do you have a local environment set up to develop on?
If you want to PM me your admin id and password I could take a little look if you like. Unfortunately no guarantees though.
I'd guess that your issue likely stems from this.
Any idea how it got there.
I have just had a look - not made any changes at all.
TBH I would likely just take a copy of the file and remove it and see what happens. I can do this if you like. but like I said - take a copy of the file first.
Thank you so much for your time, I hope one day I can return the favour!