After the upgrade to SF 4.1 our clients' website is experiencing page rendering failures due content controls with duplicate IDs. Under 4.0 all pages and content rendered correctly. See attached images. Our observations: 1) It seems to be related all the time to Content Blocks 2) The error varies between Compilation Error and Parser error 3) Pages render in design mode correctly 4) In design mode, we have confirmed the existence of duplicate IDs by looking at the Content Block's advanced properties. Changing it, or deleting the content block and re-creating the content seems to aleviate the problem. We cannot fix it consistenly due to the error being thrown sometimes in content in page footer (part of template) 5) We searched the forums for similar issues and we found this link http://bit.ly/iab7MX. We implemented the solution and are still experiencing the issue. We waited for the 4.1 release because of breaking issues in 4.0 and 4.0 SP1 that prevented us from deploying an important client website. 4.1 fixes some issues and at the same time introduces new CRITICAL issues that prevent us from completing our work and instead spend infite time posting support forum requests and tickets. Your immediate attention to most critical of issues is requested.
Parser Error Message: The ID 'C000' is already used by another control.
"sf_colsOut sf_1col_1_100 white-border shadow"
"sf_colsIn sf_1col_1in_100 gradient-box-light content-container gradient"