Update: We discovered that the GPK_RSCDIR variable was pointing to certain location but that the in the definition of the variable the backslash that should be at the end of the path was not there. Once we added the backslash to the end of the path in the variable definition then it worked fine.
The software copies the default.dlb file to a temp file and places the temp file in the GEOPAK resource directory.
The software copies the default.dlb file to a temp file and places the temp file in the GEOPAK resource directory.