The error message tridium.webuser.ui.WebUserAdminApplet is displayed when attempting to use WebUser in Niagara R2, version 532.

Issue

The Following error is displayed when attempting to use webUI:

java.lang.ClassNotFoundException: tridium.webuser.ui.WebUserAdminApplet

                        at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)

                        at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)

                        at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)

                        at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)

                        at java.lang.ClassLoader.loadClass(Unknown Source)

                        at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)

                        at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)

                        at sun.plugin2.applet.Plugin2Manager$AppletExecptionRunnable.run(Unknown Source)

                        at java.lang.Thread.run(Unknown Source)

Exception: java.lang.ClassNotFoundException: tridium.webuser.ui.WebUserAdminApplet

Product Line

TAC I/A Series

Environment

Niagara R2, WorkPlace Pro 532

Cause

Some servlets which the browser uses were left out of the webUser-2.301.532.jar files.

Resolution

The plan is to correct this issue in the next maintenance build release.

But for now, the workaround is to replace the current webUser-2.301.532.jars with the webUser-2.301.530a jars.

Reference Lessons Learned Article #4361, How to install an I/A Series R2 Jar File.