I don't even have Guest accounts...
This is strange as I have never had any issues until recently when configuring my machine for development on a new project where I modified or removed my .profile and .bash_profile configs, which really should not have impacted Parallels at all unless it requires the JVM (not!).
However, I am now locked out of Parallels which is quite crippling...
In most cases the reason of 15380 problem is UID duplication.
For example, both Guest and root users have UID 0. To fix this need to assign Guest new unique UID.
List users UID-s:
$ dscl . -list /Users UniqueID
. . .
Guest 0
Guest1 201
. . .
root 0
Change Guest's UID:
$ sudo dscl . change /Users/Guest UniqueID 0 202
This is strange as I have never had any issues until recently when configuring my machine for development on a new project where I modified or removed my .profile and .bash_profile configs, which really should not have impacted Parallels at all unless it requires the JVM (not!).
However, I am now locked out of Parallels which is quite crippling...