We've had the same issue too.  I'm thinking Dell's site has an issue.  Was working all day and just re-ran another scan and it was failing for the past hour.  Just started working again.  -Shawn
I'm trying to update the firmware on my ESX hosts (R720, R910, R730) via the Firmware Update Wizard in the Dell OpenManage plugin for VMware.  I created a repository using the Datacenter Repository Manager and the Dell System Management Plugin for vCenter Inventory.  I choose Update from repository and click Next.  The following error pops up: Severity: CRITICALError Code: 210013Time (Appliance server time): May 1, 2015 at 15:15:00Details: Configure the firmware update repository and make sure there is a valid catalog file present. Once configured, allow 10 minutes for the firmware bundles to be downloaded. The log shows The firmware repository file does not exist or is invalid. I've verified the path and credentials entered are correct, and the catalog.xml file exists.  I've recreated the repository numerous times, but get the same error. Datacenter Repository Manager 1.5, Dell plugin for vCenter is 2.2.0 Build 251.  I tried upgrading the DRM 2.0, but the scan against the vCenter would never complete.
Can't update ESX hosts via Openmanage Integration for VMware