Hi Erik, thanks for reporting this issue, freeimage/3.17.0+ds1-4 fixed an issue with the patch used to remove the vendored dependencies and use the system one instead. See #841089 [1].
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=841089 The updated patch introduces a null-node for plugins which have been disabled (here the G3 fax format). Before this patch, all nodes stored in the plugin map were guaranteed to be non-null but all plugins with IDs over FIF_FAXG3 were wrongly indexed. A fix for your issue in rviz would be to filter the plugin map from non-null nodes prior to registering the codecs. Hope this helps, Ghis
