im trying to use nio httpd, but get this error after client has connected to server:

mprotect: Permission denied

fatal error encountered in SBCL pid 523(tid 2953318400):

vm_region (VM_REGION_BASIC_INFO) failed failed 1

im using slime sbcl on macbook and dont know, what permision is meant in this case and if i should change some dir permissions...

-Marko