Thank you very much for the quick fix Ernest.
Very weird indeed that the issue workaround with the cache folder seemed to work; must be a lucky co-incidence ;).
Anyway, as you fixed the plugin in the cloned version of our development site, can you indicate when the patch will be available, as we need to fix the plugin on our proper development site still and we also still have this issue on our other site (ref. the previous ticket).
Thanks again for the quick support!
BR,
Marcel