If you have followed that blog post then you will see that this is normal:
"4. Restart the Oracle BI Server and Presentation Services using opmnctl:
./opmnctl stopproc ias-component=coreapplication_obips1
./opmnctl stopproc ias-component=coreapplication_obis1
./opmnctl startproc ias-component=coreapplication_obis1
After you confirm that the Oracle BI Server is running, then start Presentation Services:
./opmnctl startproc ias-component=coreapplication_obips1
Wait for coreapplication_obips1 to be in status first "Alive" then "Down" after a while.
Once coreapplication_obips1 had executed GUIDs update, it is exiting."
Then it continues through steps 5-7 where you UNSET the changes again and then restart the services.
You have to follow the complete blog post - which by the way is also in the original documentation - and not simply stop halfway trough.