Yes, it is in the documentation. The trouble was that the link above was for MediaPortal and the built-in TV client. You are using TV Server, so you need the TV Server documentation.
TV-Server - MediaPortal Wiki Documentation
Section 3-D in the link takes you to the post-installation configuration, including the login screen you had before.
The error you are getting is the DVBFix listed in the requirements page. I'll agree with you that the message isn't terribly useful, if it doesn't actually say DVBFix. See [Patch] Multi DVB Tuner Issue and channel-scan crash - Windows XP - MediaPortal Forum for the latest version of this hotfix. (The first post has the direction and the file to download.)
Milhouse
TV-Server - MediaPortal Wiki Documentation
Section 3-D in the link takes you to the post-installation configuration, including the login screen you had before.
The error you are getting is the DVBFix listed in the requirements page. I'll agree with you that the message isn't terribly useful, if it doesn't actually say DVBFix. See [Patch] Multi DVB Tuner Issue and channel-scan crash - Windows XP - MediaPortal Forum for the latest version of this hotfix. (The first post has the direction and the file to download.)
Milhouse
United States of America