I would suggest deleting/moving all the files related to GTK and Pango from the "Imprudence/lib/" directory, since they are probably interfering with your system-installed versions:
libatk-1.0.so.0
libcairo.so.2
libfontconfig.so.1
libfreetype.so.6
libgdk_pixbuf-2.0.so.0
libgdk-x11-2.0.so.0
libgtk-x11-2.0.so.0
libpango-1.0.so.0
libpangoft2-1.0.so.0
libpangox-1.0.so.0
libpangoxft-1.0.so.0
If that does not help, try the advice from this
this related issue another user reported.
We are probably going to stop distributing Pango and GTK in future versions of Imprudence, because of the trouble like this that it causes.