Hello Daniel,
for saposcol on HP-UX you need to ensure, that the OS patches are installed as mentioned in the notes:
http://service.sap.com/sap/support/notes/2020706
http://service.sap.com/sap/support/notes/2160578
Otherwise the latest saposcol will not run correctly. You are using 7.20 saposcol, this saposcol version is no more maintained. Please upgrade the SAPHOSTAGENT to the 7.21 version.
Regards,
Alwina