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I need a bit more information.When we click on it... it pops up a box in a blink as if it is going to do something but goes right away... a nanosecond maybe.
Twitter button works fine.
That is one of the problems. The current version of Showcase is 2.9.1. Both SC 2.8.x series and SC 2.9.x series have had changes made to the social sharing buttons because the 3rd party JS that drives them has had several changes. Plus Facebook itself has made several changes since then.Showcase 2.7.3
It shouldn't however, you should always make a backup before upgrading anything for those times when something does go wrong. If something is messed up after performing the upgrade, just send me an inbox and I can help with it.Not really... just haven't updated it. I will though... I assume it won't break anything currently in the Showcase.
File Cache, not DB cache. If you are on Shared or Managed hosting, you shouldn't have to worry about it. This would only come into play if you had your own server or vps and if you configured that server or vps to use one of the popular file cache systems. Your Server Administrator should be handling that for you (someone like MattW for instance). Depending on the file cache type, the steps to perform it are different (your sys admin will know how to do this or you need a new sys admin lol)I am not sure how to go about flushing the db cache.