Attachment error

I just started using Em Client and I like it pretty much.
There is only one problem at the moment. When I try to attach a CSV file, the following error occurs.

W7 64bit and the Em Client.version 5.0.18025.0.
Oh and I use the English translation since the Dutch is not like Dutch at all.

This problem most probably occurs because the user account that you used to log on does not have sufficient permissions - please check it.

The problem is solved. I’ve forced the owner for the registry key “Computer\HKEY_CLASSES_ROOT.csv” to administrator and now it works fine again. It seems this registry key was corrupted.