Login problems - ebooks and resources via UK Access Management Federation

We are continuing to have intermittent problems with logging in to resources via the UK Access Management Federation. This particularly affects ebooks via Dawsonera and VLEbooks, RefWorks and Reading Lists. We are waiting for a system upgrade which should happen before the end of the week. In the meantime, we apologise for the difficulties logging in and suggest that you keep trying - close the error page and re-click on the link.