CustomAction problem: No such interface supported

[PhilCooper]

I have some custom actions which worked fine in Visual Build Pro 5.7 but don't in v6.0. I have run the "convertactions.bld" file as given in previous posting but this has made no difference. I can see the action in the Actions pane and the properties seem to be there. I can also add the action to a build. However when I run the build I either get the message:

"Error creating custom action 'ProjectOrder': No such interface supported"

or

"Error creating custom action 'ProjectOrder': Class not registered"

The actions are written in C#. I have recompiled these with the new VisBuildSrv.dll and registered using the attached 'bld' file.

Any suggestions ?