ACID/MySQL error

["Madziarczyk, Jonathan" <than () cityofevanston org>]

Hi,
 
I've been running ACID (0.9.6) and MySQL successfully for about 9 months, I
tried to do a large archive (5000+ records). And now I can't get into acid
anymore.  Once I got a message that said something to the effect of "could
not access xxxxx.MYD" and either error 135 or 145 (I'd give more details but
now I can't get that message to come up anymore, it just hangs at the acid
main page).
 
Any ideas on what I can do?
 
Thanks in advance.
 
JonM