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Hi,

I had a similar problem with a rosbuild package. I was able to start the node via rosrun, but roslaunch wasn't able to launch my node, although the ROS_PACKAGE_PATH was set-up correctly. The launch-file worked already a few days ago. I tried to locate my package with rospack find [packagename] and was able to find it at the assumed location.

I made a backup of the corrupted package, deleted it and created it again with roscreate-pkg in my workspace. After that I copied the old files (Source-Files, Manifest.xml, CMakeLists.txt) into the re-created package. Than I rosbuild the package and now everything seems to work again.

Cheers, Georg