Today's excuse: Virtual Precondition Expiry Problem

In case the above is not good try one of these:

Dynamic Library Invalidation
Non-Replicated Decryption Stackdump
Non-Specific Streaming Expiry Warning
Dual-Homed Configuration Dereferencing Signal
Serious Authentication Incompatibility
Synchronous Subsystem Anomaly Warning
Generic Operation Expiry Signal
Total Retrieval Problem Signal
Virtual Logic-Subsystem Stackdump
Minor Registry Destabilisation

Get the source