Jenkins Slaves can't find Build Toolkit after Master restart

We have a large Jenkins environment and have been rolling out the  new RTC plugin to all users.   The issues is whenever the Master restarts the jobs that use the plugin are no longer able to load the toolkit from a UNC path.   We wanted to avoid loading it on all slaves if possible.   If we restart the Jenkins service on the slaves it comes back and we are in business, but obviously we don't want to do this every time.   

So, we are Windows 2008 Server for Master and Slave.

I have the toolkit installed on the master and configured to be found at a UNC path for all the slaves.  

If the controller restarts the jobs that use the plugin usually fail with:

Any ideas??

FATAL: RTC : checkout failure: Could not initialize class com.ibm.team.build.internal.hjplugin.rtc.BuildClient
11:23:06 java.lang.NoClassDefFoundError: Could not initialize class com.ibm.team.build.internal.hjplugin.rtc.BuildClient
11:23:06 	at com.ibm.team.build.internal.hjplugin.rtc.RTCFacade.getBuildClient(RTCFacade.java:51)
11:23:06 	at com.ibm.team.build.internal.hjplugin.rtc.RTCFacade.checkout(RTCFacade.java:404)
11:23:06 	at sun.reflect.GeneratedMethodAccessor248.invoke(Unknown Source)
11:23:06 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
11:23:06 	at java.lang.reflect.Method.invoke(Unknown Source)
11:23:06 	at com.ibm.team.build.internal.hjplugin.RTCFacadeFactory$RTCFacadeWrapper.invoke(RTCFacadeFactory.java:96)
11:23:06 	at com.ibm.team.build.internal.hjplugin.RTCCheckoutTask.invoke(RTCCheckoutTask.java:110)
11:23:06 	at com.ibm.team.build.internal.hjplugin.RTCCheckoutTask.invoke(RTCCheckoutTask.java:31)
11:23:06 	at hudson.FilePath$FileCallableWrapper.call(FilePath.java:2394)
11:23:06 	at hudson.remoting.UserRequest.perform(UserRequest.java:118)
11:23:06 	at hudson.remoting.UserRequest.perform(UserRequest.java:48)
11:23:06 	at hudson.remoting.Request$2.run(Request.java:326)
11:23:06 	at hudson.remoting.InterceptingExecutorService$1.call(InterceptingExecutorService.java:72)
11:23:06 	at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
11:23:06 	at java.util.concurrent.FutureTask.run(Unknown Source)
11:23:06 	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
11:23:06 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
11:23:06 	at hudson.remoting.Engine$1$1.run(Engine.java:63)
11:23:06 	at java.lang.Thread.run(Unknown Source)
11:23:06 ERROR: RTC : checkout failure: Could not initialize class com.ibm.team.build.internal.hjplugin.rtc.BuildClient