Comment #19 on issue 102 by siguc...@gmail.com: Can't allocate semaphores? VirtualMachine>>maxExternalSemaphores: aSize | Not enough space for external objects, set a larger size at startup! http://code.google.com/p/cog/issues/detail?id=102
it is already integrated into blessed branch. https://gitorious.org/cogvm/blessed/commit/294abd2826f5c5b69185f054547f5e7cb...
no problems reported.