Access Is Denied message in Sage 200cloud

SOLVED

We've had reports of an error "Access Is Denied" from numerous clients within Sage 200cloud.  Common theme is that they are all running a version of Sage 200cloud.  Doesn't seem to be reported on versions prior to cloud.

For a period we even got the message on our test VMs but it inexplicably dried up and hasn't happened for a while.  However, customers continue to report it.

Normally, logging out of the program and back in gets around it.  Typically, but not exclusively, the error will occur following the attempted display of a list view.

It's an issue that has been causing us much frustration as to what the cause may be.  Does anyone else have any experiences to share re. this error?

Thanks