[dixie7z]

Installed it over 
Ubuntu PPA: ppa:nightingaleteam/nightingale-release

nightingale
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(process:25748): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed

** Message: Unity Integration: loading
** Message: Unity Integration: checking for unity components
*** stack smashing detected ***: ././nightingale-bin terminated
Aborted (core dumped)

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I was able to run it the first time. It breaks after extension
install. I removed it and installed it again. Same problem.
Removed .nightingale from home directory.
Again the same problem.
Tried without extensions... Same.

Please help.

[freaktechnik]

Try installing nightingale-nounity.