Thanks for the reply oBFusCATed. Debug -> Attach to process works when I type the PID of the instance of Houdini running ! \o/
I've not been exact in my previous post : houdini is kind of starting when Debug -> Start, but with a lot of errors that cause it to crash. When I try the same command in a console, it gives the same result. Normally, I start Houdini from a console typing : /shared/apps/houdini/hfs11.1.118_64/bin/houdini which is a script bash calling another one setting some environment variables, and then calling /shared/apps/houdini/hfs11.1.118_64/bin/houdini-bin. When I change the host application to the first command, it fails : Starting the debuggee failed: No executable file specified. But anyway, if I manage to make this way work, it will start houdini, not attach it to an instance already running, right ? It's the latter that I want. And the way you told me is working the way I want, except it would be perfect if I could type the name of the process, rather than the PID that I have to get every time I'm starting a debugging session. Is there's a way to do that, cause I already tried with attach : houdini-bin, and I've got the same errors and crash of Houdini.