Problem while starting Mini SAP

In Mini SAP when clicking Start SAP MBS before calling SAPLogon-it is giving errors as-

Call clean-up function...

***ERROR=>SigICallExitRoutine: not initialized[Signt.C0239]

return from clean-up function...

(1)disp+work.exe has encountered a problem and needs to close.

(2)msg_server.exe has encountered a problem nad needs to close

What these errors means and how to resolve it.