#89 no transitions in 3.5.1 GLib-GObject-CRITICAL failure

[KG Hammarlund]

While my slackware package of imagination-3.5 built with the official SBo script runs as it should, transitions are not available in my 3.5.1 package built with the same buildscript. Starting from terminal gives the following:

(imagination:20856): GLib-GObject-CRITICAL **: 09:06:52.055: g_object_unref: assertion 'G_IS_OBJECT (object)' failed

(imagination:20856): GLib-GObject-CRITICAL **: 09:06:52.056: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
Using ffmpeg for encoding.
Testing ffmpeg abilities with "ffmpeg -filters" ... setdar found!

[Giuseppe Torelli]

The packager forgot to set PLUGINS_INSTALLED = 1 in src/support.h