error #1:
I have a Win98 system that I watched download the update on Friday, and then update the executable and just stop. (I was trying to run with the upload switch.. -ut).
Restarted it.. and it then uploaded fine.
(Win98SE, 256Megs Ram, 750Mhz Athlon slot A cpu).

error #2:
On a second win98 system, some time after the update, the new client popped up with an illegal operation (no error message in error.log - as expected). Win98SE, 256Megs Ram, Athlon 1700+ cpu, msi 6738 mb (or 6378) - the sdram only motherboard.

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I've seen reports of error #1 showing up on other people's systems - as mentioned on other team forums.