Originally posted by Jay
I've just come home from work & found the same error one of my WinXP machines.
Do you want the folder zipping & uploading?
Having looked at your directory, it appears that you most recent minimized structure got corrupted during creation. A possible reason for this may be faulty RAM, so be sure to double-check.

In the meantime, you can fix the error by removing the file named <your_handle>_36_<your_handle>_protein_220_0000018_min.val from the directory (you could simply rename the file for backup). This will cause the minimized structure to be regenerated anew and proceed normally.