Could not load Solidworks dll - GdtAnalysisSupport.dll

Hi,

When I open my assembly I get massage "Could not load Solidworksdll - GdtAnalysisSupport.dll". But on clicking OK it goes but stillloads OK. I know this is a problem with Microsoft .NET Framework. Ihave reinstalled it but it is the same. How can I fix this problem?

The biggest problem is that I can open this assembly now only onthis computer. I can't open it on my laptop anymore. If my oldcomputer crash I will loose the whole work.

Can somebody help me please?
Thanks.
SolidworksAdministration