I deactivated the plugin, upgraded & reactivated the plugin and it is now giving me this error when it didn't before:
It appears Minify URL rewriting is not working. If using apache, verify that the server configuration allows .htaccess or if using nginx verify all configuration files are included in the configuration.
I deactivated and reactivated the plugin again. Deactivated and reactivated the minify part of the plugin. Restarted my Apache server, but the error persists. Looking above at Frederick's comment, I can see that it's unlikely that anything can be done without someone knowledgeable about both this plugin and my server looking into it. But if anyone has any suggestions for what kind of permissions setting I'd need to change or look at just for this minify issue (my server does currently allow .htaccess), I'd be grateful for that.
Also, is it better to leave minify turned off for now?
Thanks!