Error 204

Can’t somebody please tell what to do with this error?
Event Type: Error
Event Source: WAM
Event Category: None
Event ID: 204
Date: 10/1/2000
Time: 2:52:48 PM
User: N/A
Computer: MyComputerName
Description:
The HTTP server encountered an unhandled exception while processing the
ISAPI Application ‘ IISRTL!ALLOC_CACHE_HANDLER::Alloc(void) + 0x7
ISATQ!_AtqAddAsyncHandle@24 + 0x1C ISATQ!CDirMonitor::Monitor(class
CDirMonitorEntry *,char const *,int,unsigned long) + 0xA8 asp + 0x879B +
0xD86A3FBE ‘.