Hey Richard,

This is a common problem that people face with Joomla and it isn't related to our extensions. It is related to the permissions of your cache folder. Take a look at the post here, https://forum.joomla.org/viewtopic.php?t=928829

Hi Mark, I haven't changed any cache settings, the problem could be related to PayPlans (I installed it just before updating to J3.8.1), how do i uninstall PayPlans to check? I can always install it again as i haven't set anything up properly yet.

Is it Extensions-Manage-Manage-Components and delete PayPlans 3.6.3 and it will remove everything else?

Update

Hi Mark, I just noticed the admin cache folder that normally holds the JUsertube cache files is missing and when i added it, the problem disappeared.

It seems Joomla removed it during the update to J3.8.1

All fine now and thank you for your help (the link was the right direction to go)!

Thanks for updating me on this and glad that your issues are resolved now