I'm having some troubles with captions in longtable tables. I'm trying to typset for a thesis (so am using a class that I didn't write) and my school requires double spacing for body text but single spacing for caption text. To the best that I can determine via google, longtable formats its captions with the formatting specified in the class. I'm using some normal tables and some longtable tables, so the caption formatting is different between tables, which looks odd...
I've found an answer to my almost exact question here but when I try to utilize the answer suggested there, I get an error saying that the "caption" package is not recommended for use and unsupported. That answer was published a few years ago so I'm not really sure what has changed since then.
Anyways, any help would be much appreciated! I'm a pretty basic latex user so appreciate any examples that I can cut/paste/fiddle so I can learn. Thanks!