Recently I migrated my NAGIOS XI install from a 32-bit Red Hat 5.x to 64 bit centOS 6. I had to fix a few issues and now things seems to be running well, except for the Views tab and also the Scheduled Downtime option, for which I get:
Whoops!
Error: Could not read object configuration data!
Here are some things you should check in order to resolve this error:
Verify configuration options using the -v command-line option to check for errors.
Check the Nagios log file for messages relating to startup or status data errors.
Make sure you read the documentation on installing, configuring and running Nagios thoroughly before continuing. If all else fails, try sending a message to one of the mailing lists. More information can be found at http://www.nagios.org.
Thanks! I have enabled a ramdisk in the previous install and the config files were still pointing to it. So I created the ramdisk and it's working again.