I started Cuis's Sunit tester and selected the Unix test classes with
OSProcess in them.  The image crashed immediately when I ran the tests.
There was no debug log, but the terminal showed
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server
":0.0"
      after 94458 requests (94404 known processed) with 0 events
remaining.
squeak: ../../src/xcb_io.c:182: process_responses: Assertion `((int)
(((dpy->last_request_read)) - ((dpy->request))) <= 0)' failed.

Ross