Hi Cody,
I've done some offline investigation into this with Notandy, and I'm convinced this is a DNN Core bug. Here are my comments from my recent email back to Notandy. This work was done on a copy of his site.
I spent a reasonable amount of time on this yesterday, because I was pretty sure that it wasn't a problem with the Events module. The things I did that didn't immediately solve the problem:-
- Changed skin to default on whole site
- Changed Module Cache Provider to File - though I had to do this by editing the database because the Host Settings page errored
- Changed Cache Setting to Moderate
- Changed Authenticated Cacheability to Public
- Upgrade the module to 5.2.0
- Change jQuery back to 1.4.2
I tried the Cache and jQuery items because it looked to be problems in that area. The major reason I considered not an Events module issue is because when I click the Return button in the Events module I get the error listed below (yellow triangle in bottom left corner of IE), which I also get when I click the 'Restart Application' button on the Host Settings page (different error to the one mentioned above, which wasn't repeated).
I tried one more thing this morning - to turn off GZip Compression. This immediately resolved the problem. I also then turned back the other settings, and the problem is still solved.
I tried setting the setting on my Dev 5.6.2 with GZip on, and I get the same error. I tried the same setup in my Events module dev on DNN 5.5.0 - no problem
So this implies to me a problem with DNN 5.6.2. I'm personally avoiding 5.6.2 because I know of a security hole in it, and I think there are bugs that I'm not prepared to deal with (this is now one of them).
Consequently I'm now satisfied this is not an Events module problem so I don't intend to do any more work on it. I will have a look around and see if this is a known error, and let you know if I find anything.
Here is the error:-
Webpage error details
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; .NET4.0C; .NET4.0E)
Timestamp: Sat, 9 Apr 2011 17:33:27 UTC
Message: Sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.
Details: Error parsing near '<!DOCTYPE html PUBLI'.
Line: 5
Char: 62099
Code: 0
URI: http://localhost/Lagrave/ScriptResour...
I did this search on Google which came up with a load of likely suspects which suggest this is a known problem.
http://www.google.co.uk/#sclient=psy&hl=en&site=&source=hp&q=dnn+5.6.2+gzip&aq=f&aqi=&aql=&oq=&pbx=1&fp=438694ac33275399
Therefore can you try turning off GZip compression on your site, and see if that solves the problem.
Cheers
Roger