After completing those steps, see Upgrading from v7.8.x to v8.0.x for instructions on upgrading additional TRITON AP-DATA components, like the protector and agents.
To obtain the hotfix, visit MyWebsense.com, select TRITON AP-WEB v8.0, and then select "v8.0.0 HF 01 WCG Failed to Detect AP-DATA File Types."
After completing those steps, see Upgrading from v7.8.x to v8.0.x for instructions on upgrading additional TRITON AP-DATA components, like the protector and agents.