Summary Links Web Part (Error 0x80070002)

Today, We faced one wierd error message regarding Summary Links Webpart.
Due to some requirement, one of the user in my project demanded me the replication of one of the site collections. So, Itried to take the export and imported it one to a new one with blank site template. Export and import both were successfull and replication has been done properly but the problem starts now, when we open the site and we found out one error message related to Summary Link Webpart.

Unable to add selected web part(s). Could not load XSL file. The system cannot find the file specified.(Exception from HRESULT: 0x80070002).
Solution:
This error is usually raised when you try to add a publishing-related web part (such as Summary Links) into a non-publishing site. You have to either add it into a site built with a publishing template (Collaboration Portal or Publishing Portal), or to activate the publishing features manually:

-Activate Office SharePoint Server Publishing Infrastructure feature in site collection features, in Site Collection Administration section of Site Settings page
-Activate Office SharePoint Server Publishing feature in destination site features, located on Site Administration section of Site Settings page

SharePoint Server 2010 Preliminary System Requirements

Very Soon, Microsoft will release the new version of SharePoint and that is Microsoft Office SharePoint Server 2010 i.e. Office 14

SharePoint Server 2010 Preliminary System Requirements
1.SharePoint Server 2010 will be 64-bit only.
2.SharePoint Server 2010 will require 64-bit Windows Server 2008 or 64-bit Windows Server 2008 R2.
3.SharePoint Server 2010 will require 64-bit SQL Server 2008 or 64-bit SQL Server 2005.

Microsoft also announced some important requirements regarding SharePoint Server 2010 browser compatibility:
-To ensure the best possible experience across multiple browsers, Microsoft is focusing on SharePoint 2010 engineering efforts on targeting standards based browsers (XHTML 1.0 compliant) including Internet Explorer 7, Internet Explorer 8 and Firefox 3.x. running on Windows Operating Systems.
-In addition, Microsoft also planning to increased level of compatibility with Firefox 3.x and Safari 3.x on non-Windows Operating Systems.
-Due to this focus Internet Explorer 6 will not be a supported browser for SharePoint Server 2010.

You can find additional information on Microsoft’s Support Lifecycle Policy including specific dates, product information and support offerings here: http://support.microsoft.com/gp/lifepolicy.

Advantages of 64-bit hardware and software (Office SharePoint Server 2007)
http://technet.microsoft.com/en-us/library/dd630764.aspx

Migrate an existing server farm to a 64-bit environment (Office SharePoint Server 2007)
http://technet.microsoft.com/en-us/library/dd622865.aspx