wu error

Just got this:
08/31/05 18:30:16|Einstein@Home|Unrecoverable error for result w1_1118.0__1118.2_0.1_T05_S4hB_1 (The system cannot find the file specified. (0x2) - exit code 2 (0x2))
THoughts? It crunched the unit in the normal time, then after six and a half hours of work it can't read the file? The program failed to write the result file? I have about 25 gigs of free space on the work drive. thanks..p
Boy, I'm a 'problem poster' today (g)..