If you've got a build directory which you've previously used and it contains a bblayers.conf and you've got a (dynamically) created toaster-custom-images layer defined which doesn't exist the check on the path bitbake does will stop it from starting up. ERROR: Traceback (most recent call last): File "/home/michael/dev/yocto/poky/bitbake/lib/bb/cookerdata.py", line 179, in wrapped return func(fn, *args) File "/home/michael/dev/yocto/poky/bitbake/lib/bb/cookerdata.py", line 201, in parse_config_file return bb.parse.handle(fn, data, include) File "/home/michael/dev/yocto/poky/bitbake/lib/bb/parse/__init__.py", line 113, in handle return h['handle'](fn, data, include) File "/home/michael/dev/yocto/poky/bitbake/lib/bb/parse/parse_py/ConfHandler.py", line 124, in handle abs_fn = resolve_file(fn, data) File "/home/michael/dev/yocto/poky/bitbake/lib/bb/parse/__init__.py", line 136, in resolve_file raise IOError(errno.ENOENT, "file %s not found" % fn) IOError: [Errno 2] file /home/michael/dev/yocto/poky/_meta-toaster-custom/conf/layer.conf not found ERROR: Unable to parse /home/michael/dev/yocto/poky/_meta-toaster-custom/conf/layer.conf: [Errno 2] file /home/michael/dev/yocto/poky/_meta-toaster-custom/conf/layer.conf not found Bitbake server start failed WARNING: Could not connect to server at 0.0.0.0:50216 ([Errno 111] Connection refused) ERROR: Could not connect to server 0.0.0.0:50216 : [Errno 111] Connection refused