Server 2008 R2, IIS 7.5, ISAPI Rewrite redirecting page to ColdFusion file throws 500 error

Hi experts!  

Server 2008 R2 Enterprise
ColdFusion 8 Enterprise configured as a multiple server with JRUN4
Helicon ISAPI Rewrite

I have an ISAPI rewrite (helicontech.com) rule that's redirecting requests in this form:

http://www.mydomain.com/index/method/c.home/var1/15.html

to

http://www.mydomain.com/index.cfm?method=c.home&var1=15

I have three older sites on this server that this is working fine.

I upgraded ISAPI rewrite to Helicon APE in April.  I'm just now adding a new rule to redirect to a cfm page and it's failing.  It fails if added to a working .htaccess file but the old rule still works!  It also fails on a totally new web site.

The above redirect is throwing an IIS 500 internal server error.  The detailed error information includes:

Requested URL:  http://www.mydomain.com:80/index.cfm?method=c.home&var1=15
Physical Path:  d:\websites\mydomain\index.cfm

If I copy/paste the requested URL into the browser it works fine.  So CF is definitely working...just not when it's being redirected.

Any ideas on this guys?
tnunamakAsked:
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tnunamakAuthor Commented:
You can see an example of this behavior on this page:

http://project.toshop.com/
tnunamakAuthor Commented:
This is on the same server... notice it's working correctly

http://www.sheridanmentoring.com/index/method/c.productDetails/sbs/0.html
tnunamakAuthor Commented:
I found a solution.  I noticed one of the working sites didn't have an .htaccess file.  It was using the old httpd.ini file. I copied this file to the new site and it worked fine!  I'll have to run it by Helicon but it could be something simple like ISAPI Rewrite needs to be uninstalled.  Perhaps it was conflicting with APE.

Thanks anyway experts!

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Microsoft IIS Web Server

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