Please advise concerning "can't locate object method" errors in 3.8.8

The two problems are:

click on rtfm, get this error:

RT::FM::Article::CurrentUserHasRight Unimplemented in
RT::FM::ArticleCollection.
(/data02/rt3/bin/…/lib/RT/FM/ArticleCollection_Overlay.pm line 38)

Click on priority tickets, get this:

Can’t locate object method “SearchIds” via package “RT::Dashboard” at
/data02/rt3/share/html/Dashboards/Render.html line 61, line 1662.

Are these known problems with 3.8.8 that are fixed in 3.8.9? We’re
upgrading from 3.8.0 to 3.8.8; do we need to tweak a configuration
file or build with different options or something?

The two problems are:

click on rtfm, get this error:

RT::FM::Article::CurrentUserHasRight Unimplemented in
RT::FM::ArticleCollection.
(/data02/rt3/bin/…/lib/RT/FM/ArticleCollection_Overlay.pm line 38)

You forgot to mention your RTFM version.
If you’re coming up to 3.8.8, you want the newest RTFM also

Click on priority tickets, get this:

Can’t locate object method “SearchIds” via package “RT::Dashboard” at
/data02/rt3/share/html/Dashboards/Render.html line 61, line 1662.

This sounds like you have an old share/html since
Dashboards/Render.html stopped calling SearchIds in 3.8.2

-kevin