Below error is shown in the logs while starting Rational Application Developer 7.5x on a Windows 7 machine. If you are starting RAD through a shortcut, right click and select "Run As Administrator" - this will resolve the issue.
ADMU0116I: Tool information is being logged in file
D:\Apps\IBM\WCD7\WCDE_E~1\wasprofile\logs\server1\startServer.log
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
at java.lang.reflect.Method.invoke(Method.java:599)
at com.ibm.ws.bootstrap.WSLauncher.main(WSLauncher.java:260)
Caused by: com.ibm.websphere.management.exception.AdminException: ADMU7707E: Failed while trying to determine the Windows Service name for server: server1;
probable error executing WASService.exe: com.ibm.websphere.management.exception.AdminException: ADMU7709E: Unexpected exception while processing server: server1; exception = java.io.IOException: Cannot run program "D:\Apps\IBM\RAD7\SDP\runtimes\base_v7\bin\WASService.exe": CreateProcess error=740, The requested operation requires elevation.
at com.ibm.ws.management.tools.WindowsService.getWindowsServiceNameForServer(WindowsService.java:221)
at com.ibm.ws.management.tools.WindowsService.(WindowsService.java:154)
at com.ibm.ws.management.tools.WindowsService.getWindowsServiceInstance(WindowsService.java:139)
at com.ibm.ws.management.tools.WsServerController.getWindowsServiceIfAvailable(WsServerController.java:161)
at com.ibm.ws.management.tools.WsServerLauncher.getWindowsServiceIfAvailable(WsServerLauncher.java:157)
at com.ibm.ws.management.tools.WsServerController.executeUtilityOnWindows(WsServerController.java:129)
at com.ibm.ws.management.tools.WsServerLauncher.main(WsServerLauncher.java:138)
... 5 more