We just applied the SharePoint 2007 Feb CU and there were no errors in the update process. The problem is whenever we attempt to work with columns in a list (add or update) we get the following error:
Culture ID 1164 (0x048C) is not a supported culture.
Parameter name: culture
This error happen on existing lists as well as newly created lists. Any assistance is appreciated.
Best Answer
After a call to MS support, we managed to get this one resolved. I don't know if this is something others will run into, but for some reason a VERY old version of the Microsoft.SharePoint.ApplicationPages.dll was loaded into the GAC on the server. This DLL should be located in the app_bin folder of each web application on the farm. After we removed the DLL from the GAC everything started working. We could not come up with a reason for why that DLL was in the GAC, but the server had been around since January of 2007.