Running on a gentoo linux distribution at a current level.
One of the supplied libraries (libkrb5support) in PixInsignt/bin/lib calls out the library libselinux which may not be installed on all systems as selinux is used for a hardened environments.
Anyway... I was quickly able to work around the problem by simply not pointing LD_LIBRARY_PATH to the bin/lib directory and let PixInsight use the system libraries. While this might cause an issue down the line in terms of library compatibility, PixInsight does seem to be working just fine.
I implemented my workaround by simply modifying the supplied PixInsight.sh script and altering the assignment to LD_LIBRARY_PATH to:
LD_LIBRARY_PATH=$dirname
As I said in the subject line, this was (is?) a minor issue. I have a work around, but felt that listing the problem might help someone else if they run into the same problem.