It seems a dependency is missing, namely libstdc++6 is of a too old version
in Trisquel 7 for ricochet to work :/ )
Which would confirm what mateson GNUser wrote above..
However it is possible that the last version (1.1.4 I think) will not work in
Trisquel 7, in that case use previous version (1.1.3 I believe) which will
run just fine. There are no serious security issues between one and the other
version.
Try version 1.1.3 maybe and wait for Trisquel 8 to reach stable (in 2021, heh
:P)
/me sends patience points..
