aspnet_regiis -pi import problems

Question

Hi 

Previously I was able to sucessfully import a RSA key container using the aspnet_regiis tool onto a production server.  I removed the imported RSA key container using aspnet_regiis -pz.  I then make some changes to my connection strings in my web.config file, encrypted the strings and exported the key file for use on the production server.
When I came to re-import the newly created RSA Key container file onto the production server using aspnet_regiis -pi the following error  keeps coming up:

Importing RSA Keys from file
Safe handle has been closed
Failed!

I'm a newbie at all this stuff and have followed all the walk throughs provided by Microsoft.
Any help would be greatly appreciated..

Regards,

Richard

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RJT Smith