Forum OpenACS Q&A: Re: Fatal: received fatal signal 11
To get rid of the "fatal signal 11" error I just started from absolute scratch. Deleting all executables and sources.
I made sure Tcl and OpenSSL were compiled with thread support (which I had done before as well). And things worked. I probably had a typo or some other tiny error that made things break.
Thank you Gustaf and Andrew for your help,