error CS0433: The type 'AjaxControlToolkit.PopupControlPopupPosition' exists in
An error occurred during the processing of . c:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\12\TEMPLATE\LAYOUTS\_cd\nwacollab\controls\languageswitch.ascx(110): error CS0433: The type 'AjaxControlToolkit.PopupControlPopupPosition' exists in both 'c:\Windows\assembly\GAC_MSIL\AjaxControlToolkit\1.0.11119.20010__28f01b0e84b6d53e\AjaxControlToolkit.dll' and 'c:\Windows\assembly\GAC_MSIL\AjaxControlToolkit\3.0.30512.20315__28f01b0e84b6d53e\AjaxControlToolkit.dll'
languageswitch.ascx;
<%@ Register TagPrefix="ajaxToolkit" Namespace="AjaxControlToolkit" Assembly="AjaxControlToolkit, Version=1.0.11119.20010, Culture=neutral, PublicKeyToken=28f01b0e84b6d53e"%>
在ascx文件中指定了版本,在别的服务器上可以运行,迁移到别的服务器后就报这个错了。