Ok, now I have a new PC without floppy or card readers and nor disabled device and I get the same error on change the Localization property of the setup project.
So I have always to restart VS2008 :(
The solution was converted from VS2005 for many months.
The setup project fileSetupRheo3000.vdprojis checked out from source control provider "Source Hero" and is NOT read-only.
It is strange because sometimes it works one or two times.
I changed the language for example from English to German.
Error:
Properties Window with message:
Property value is not valid
andDetail:
Exception of type 'System.Runtime.InteropServices.ExternalException' was thrown.
Any Ideas how to solve this problem?
Sven Kuehne