also repair your install , potentially. The file could have been corrupted at one point or another, you never know! Skyfire isn't usually a zone that gets modified since there's only one version of it, so it is strange to think it is crashing you..
also if you don't have your system set up for it, go to My Computer, Right click your Local Disk ( C: ) or the drive letter you installed EQ, go to Properties, Tools, and run Error Checking (Scan disc), this is just good practice to see if your hard drive is healthy, since Windows partitions need to be scanned for errors from time to time, the file may be bad due to a system crash while playing EQ.
Trevius and my 2 suggestions should fix it, if not then clean reinstall and see if it persists.