Our Sharepoint portal has been active for some years now but I'm just now getting bug reports about some controls not working. So far all problem reports are from subsidiaries - some here in Germany, others in the US.
The controls are all on UpdatePanels and cause the following error message:
Meldung: 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 PUB'. Zeile: 5 Zeichen: 62099 Code: 0 URI: http://portalp/ScriptResource.axd?d=tBOLY2kq1uaK6kD_aXo93OFalhL9aphke4d53_sq1dRfcIBYE0qIgcmWdYC742LMtXwFgP2IzLEYaioM3yrkYNf-n3bi_8-9pLWAF-I15SU8jWyqpTkbSR81uDJ86tOJOuR4XKJDTwjdIMIgm4FHTe7O0Ng1&t=ffffffffb868b5f4
I have read a number of the other posts on this subject and also the developer blog but I cannot see that I am breaking any of the rules.
We are using Sharepoint 2010 on WinServer 6.1 and IIS 7.5. End users have WinXP & IE6 or Win7 & IE7.
As no one in-house has mentioned this problem, I'm assuming a firewall problem. I think if any of the above rules were being broken it would affect all users - right?
Has anyone else had this kind of problem?
Just did some tests with the firewall and think that it can be ruled out. So I'm still puzzling over this one...