String index out of range?

On a URL Scraper channel I am getting the following error:

8/28/01 11:17:29 AM CDT: Thread[Thread-774,5,main]

ERROR: HTMLFetcher.run(): invalid cookie: Set-cookie:

NSES40Session=29%253A3b8

bc419%253A7d7b1ea4177758f;path=/;expires=Tue, 28-Aug-2001 16:47:29 GMT

java.lang.StringIndexOutOfBoundsException: String index out of range: -1

at java.lang.Throwable.fillInStackTrace(Native Method)

at java.lang.Throwable.fillInStackTrace(Compiled Code)

at java.lang.Throwable.<init>(Compiled Code)

at java.lang.Exception.<init>(Compiled Code)

at java.lang.RuntimeException.<init>(Compiled Code)

at java.lang.IndexOutOfBoundsException.<init>(Compiled Code)

at java.lang.StringIndexOutOfBoundsException.<init>(Compiled Code)

at java.lang.String.substring(Compiled Code)

at

com.iplanet.portalserver.providers.urlscraper.HTMLFetcher.run(Compi

led Code)

Anyone have any ideas as to what is causing this?

[1041 byte] By [708789] at [2008-2-24]