Hi!
I have exactly the same problem now – I updated from Version 3.41 (where everything worked fine) to Version 3.54, and get the following Error:
Fatal error: Uncaught Exception: C:\wamp64\vhosts\www\wp-content\plugins\nextgen-gallery/templates\C:\wamp64\vhosts\www\wp-content\plugins\nextgen-gallery\templates\Thumbnails\default-view.php.php is not a valid MVC template
in C:\wamp64\vhosts\www\wp-content\plugins\nextgen-gallery\src\Display\View.php on line 284
Seems to be the same problem in the new Version?
Regs
GAM
