I am getting the JavaScript error:

WebForm_PostBackOptions is undefined

When PageBlaster is enabled.  Here are my rules:

        < excludePaths>
   < path pattern="WebResource.axd" excludeFrom="All" />
   < path pattern="[^\.css]\.axd" excludeFrom="All" />
   < path pattern="(\.asmx|LinkClick|SiteMap|/admin/|/host/|\.ashx|rss|install|thumb|wizard|cart|404|fck)" excludeFrom="All" />
   < path pattern="(\.gif|\.jpg|\.png|\.js)" excludeFrom="All" />
   < path pattern="ctl.*?(edit|module|tab)" excludeFrom="All" />
        < /excludePaths>

I know that the WebForm_DoPostBackWithOptions is in the WebResource.axd file.  I had that already excluded, but just for giggles I excluded it explicitly as you can see above.  Forums posts all over suggest that this is a compression problem ,but if it is excluded here and the DNN compression is not enabled, why is this happening?  It only happens when PageBlaster is enabled.

[EDIT]
I forgot to add that this only happens in IE, and not FireFox.  And yes, I have tried Shift Refresh as well as Ctrl F5.
[/EDIT]

I turned tracing on, and noticed that the JavaScript file that contains the script is indeed getting excluded, yet the JavaScript error exists:

PB:RequestController:IsExcludedFrom: Request Is Excluded:
 Path=http://DOMAIN.COM/webresource.axd?d=c2cyirhpu_r3n7wigs9iiw2&t=633350545828127314
 ExcludeFrom=All ExcludePattern=WebResource.axd

I have attached other files to help you help us (as suggested in my other thread).  You will notice that since the page is excluded as well (see attached config), the mark-up is nearly identical.  Yet the problem remains.

I couldn't delete the "WebResource" folder, because I couldn't find one anywhere in the Cache folders.  Also, I am able to duplicate this behavior over and over.  If I enable PageBlaster in the HttpModules section of the Web.Config, the javascript (.axd) file that holds the definition for the "WebForm_PostBackOptions" doesn't load.

It looks like I am not the only one:
http://www.snapsis.com/Support/tabid/601/forumid/9/postid/5582/view/topic/Default.aspx

I have just about exhausted all of my efforts.  I cannot think of anything else to do to exclude the files.  If we cannot fix this, we will have to look for other options for particular this site, as none of the management links (Update links, Restart Application, etc.) will work with PageBlaster enabled.  Everything else is absolutely wonderful.

3.2.1 should not have that problem, especially if you are excluding WebResource.axd
It wouldn't hurt to upgrade it though.

I just went to your site and it doesn't look like PageBlaster is enabled but you still have several javascript errors in WebResources.axd