IDM plugin for iManager broken after applying 2.7.6 Patch 1

Upgrading iManager from 2.7.6 to 2.7.6 Patch 1 breaks the IDM plugin for
iManager. 
The error given:
Unknown error code returned by isSearchContainerDNValid(): null

This issue occurs if the browser cached iManager information that doesn't have the 
token updated by the patch.  Simply clearing the browser cache should resolve this.

To manually clear the cache from the standalone version of iManager:

For Windows:

Exit iManager.

Browse for C:\Users\\AppData\Edit: doc shows path for Vista...for XP look here: C:\Documents and Settings\<username>\Application Data\Mozilla\eclipse\Cache

Delete all the data from the Cache directory.

Restart iManager.

For Linux:

Exit iManager.

Browse for one of the following:
/root/.mozilla/eclipse/Cache (for root user)
/$HOME/.mozilla/eclipse/Cache (for non root user)
Delete all the data from the Cache directory.
Restart iManager.