Hi,
I installed crmsh-1.2.5-55.3.x86_64 from the OpenSUSE repo on CentOS 6.4 with Pacemaker 1.2.5-55.3 and get the following error when attempting to create a new shadow (Note all the following commands run as root):

crm(live)cib# new test
INFO: test shadow CIB created
ERROR: test: no such shadow CIB

If I then try to create that same shadow again I get the following:

crm(live)cib# new test
A shadow instance 'test' already exists.
  To prevent accidental destruction of the cluster, the --force flag is required in order to proceed.

Trying to create the same shadow with crm_shadow also throws the same error:

[root@node crmsh]# crm_shadow -c test
A shadow instance 'test' already exists.
  To prevent accidental destruction of the cluster, the --force flag is required in order to proceed.

I looked at comment #21 in bug #37760 (http://savannah.nongnu.org/bugs/index.php?37760#comment21) and comparing with a CentOS6.3/Pacemaker 1.1.7 install I could see that the directories used to store the cib had indeed changed as you suggested. Creating a symlink to map the 1.1.8 directory to the old 1.1.7 location allowed crm to again work with the shadow cibs.

ln -s /var/lib/pacemaker/cib /var/lib/heartbeat/crm

I didn't consider the other changed directories so there may still be issues related to the changes.

Regards,
John