Hi all, Recently had some problems getting started with ros plugins using the class loader. Absolutely, the class loader must not go out of scope before your instance does. When arranging things using c++ classes, this can sometimes be a bit tricky and involve a bit of black magic (making exactly sure things are sequenced in a particular way). May we freely append some case scenarios to the troubleshooting section on the pluginlib pages? -- Phone : +82-10-5400-3296 (010-5400-3296) Home: http://snorriheim.dnsdojo.com/ Yujin Robot: http://www.yujinrobot.com/ Embedded Control Libraries: http://snorriheim.dnsdojo.com/redmine/wiki/ecl