I am new to CodeXL and started by going through the Quick Start guide. Working with Ubuntu 14.04 x64 and with latest CodeXL (1.7). I reached the first example, the Teapot one. Loaded it, ran it, SIGPIPE. Write to pipe with no readers. I have to exit CodeXL after that to continue. The matrix multiplication example profiles OK. CodeXL seems to use gdb. I need CodeXL to debug my openCL app. Is this a general Teapot problem, and how can i get it working? Why does CodeXL become unresponsive and have to start it over?