VERIFIED SOLUTION i

How to resolve an "Existing product area is listed as already installed" error during a CODE-1 Plus install on Unix

Operating System:  UNIX
 
The error  "Existing product area is listed as already installed" can be resolved by deleting the /var/group1/.group1c1p file and re-installing CODE-1 Plus.  The /var/group1/.group1c1p file is a text file within the CODE-1 Plus installation location.  If it is not found, it will be seen as a new installation.  
UPDATED:  March 30, 2017