Problem with AD plugin since upgrade

Hi;

I upgraded Orchestrator from version 4.2.2 to version 5.5.1 and now I'm having problems with my AD plugin.

The plugin is version 1.0.4.

When I do a simple search in AD it returns an error:

TypeError: Cannot find function search in object notfound.

I also did this:

System.debug(AD);  (the variable AD is AD:ActiceDirectory)

And this is the result:

[2014-05-07 16:59:30.956] [D] notfound

I have made a backup of the plugins + the config files of the plugins.

And I have copied the backup config file to the folder containing the configs for the plugins.

I can see the AD plugin active, I can browse it in Orchestrator.

Can somebody help me with this?

Kind regards,

Jonathan