HTML Templates access denied error on C:\Windows\TEMP\RazorEngine

Hi,

I have been getting the following error when I render a HTML Template in the client:

An error occurred while rendering the template. Access to the path 'C:\Windows\TEMP\RazorEngine_3z13nd4e.05g' is denied.

I've updated the security on the C:\Windows\TEMP folder to give full rights to MACHINENAME\Users group, and then the template works again.

However, a few weeks later the error happens again, and I can see the 'Modify' and 'Full Rights' and no longer checked for the \Useres group.

It seems that something is resetting the security rights on this folder.

Has anyone else had this issue?

Many thanks,

Dara