Hi Michael,
You need to stop the SAPINST process.
Open the keydb.xml file. Perform a search for "ERROR". Replace this with "OK".
Save the file.
Incase you could not find any entry with "ERROR" you may ignore it.
Start the SAPINST once again using the below option
./SAPINST SAPINST_SKIP_ERRORSTEP=TRUE
Hope this helps.
Regards,
Deepak Kori