Last Error 58206

I haven't used Projectwise in a while, trying to access a file in a folder which I have just been given permission to access. getting the above error message when I try to log in. Thought perhaps it might be on a old password, so I click the "forgot password" button on the connection client window, but it allows me to log into a browser version with my current password. Unfortunately all the files I need do not appear to be available on the web version of the project.

Advice please.