If you have recently updated your WordPress to version 4.6 you may be seeing the following error message...

Fatal error: Cannot redeclare the_post_thumbnail_caption()

We have fixed the issue and have uploaded updated files to ThemeForest, please login to your account and download the latest version of the Tipi theme.

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Nudge WordPress Theme Documentation

Documentation is included in the packaged files downloaded from ThemeForest, but you can also grab the PDF file here