Hello Adam and thanks for the response. My version is 5.4.33 so this shouldn't be the factor. I opened up a console in safari (which I normally use) and got this message after attempting to open again:
[Error] Failed to load resource: the server responded with a status of 504 (Gateway Time-out) (index.php, line 0)
Doesn't seem like much to go on, but that's what I'm getting. Any ideas on how this plays out from here? Maybe Roundcube is corrupt from the install? Any way to re-install round cube separately or maybe a different version? This is very strange.
Thanks so much Adam!
Duncan