Deadlock logs missing Node data

Question

When capturing a deadlock event in the logs, I am getting a message that indicates:

Log Viewer could not read information for this log entry. Cause: Data is Null. This method or property cannot be called on Null values..

When I look in the ERRORLOG file, I see something like this:

2010-01-18 04:47:15.69 spid4s      Wait-for graph
2010-01-18 04:47:15.69 spid4s      
2010-01-18 04:47:15.69 spid4s      Node:1

2010-01-18 04:47:15.69 spid4s      
2010-01-18 04:47:15.69 spid4s      Node:2

2010-01-18 04:47:15.69 spid4s      PAGE: 10:1:1734                CleanCnt:3 Mode:IX Flags: 0x2

Why isn't there any information for Node:1?