Can't Uninstall PGP Desktop

I am trying to uninstall PGP Desktop 10.3.2, running under OSX 10.9.3 (Mavericks). I only just installed this software a couple of months ago. 

The Uninstall command in the Encription Desktop does not work (raises the prompt to go ahead Yes or No, but when I choose Yes does nothing. A look at the system console shows the following:

6/24/14 3:37:00.260 PM PGP Engine[292]: *** -[__NSArrayM objectAtIndex:]: index 2147483647 beyond bounds [0 .. 8]
6/24/14 3:37:00.261 PM PGP Engine[292]: (
    0   CoreFoundation                      0x9b306471 __raiseError + 193
    1   libobjc.A.dylib                     0x91e34091 objc_exception_throw + 162
    2   CoreFoundation                      0x9b1ced7a -[__NSArrayM objectAtIndex:] + 250
    3   PGP Engine                          0x0006bad8 -[CPGPAppController removeLoginItem] + 525
    4   PGP Engine                          0x00070da4 -[CPGPAppController doUninstall:] + 83
    5   PGP Engine                          0x0006d616 -[CPGPAppController uninstall:] + 41
    6   libobjc.A.dylib                     0x91e402af -[NSObject performSelector:withObject:] + 70
    7   Foundation                          0x970164b2 __NSThreadPerformPerform + 318
    8   CoreFoundation                      0x9b226b6f __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
    9   CoreFoundation                      0x9b21796b __CFRunLoopDoSources0 + 235
    10  CoreFoundation                      0x9b21706e __CFRunLoopRun + 1022
    11  CoreFoundation                      0x9b2169fa CFRunLoopRunSpecific + 394
    12  CoreFoundation                      0x9b21685b CFRunLoopRunInMode + 123
    13  HIToolbox                           0x904fcb5d RunCurrentEventLoopInMode + 259
    14  HIToolbox                           0x904fc8e2 ReceiveNextEventCommon + 526
    15  HIToolbox                           0x904fc6bd _BlockUntilNextEventMatchingListInModeWithFilter + 92
    16  AppKit                              0x92696369 _DPSNextEvent + 1602
    17  AppKit                              0x92695890 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 119
    18  AppKit                              0x9268817c -[NSApplication run] + 727
    19  AppKit                              0x92671018 NSApplicationMain + 1165
    20  PGP Engine                          0x0006adf9 start + 53
)

I also tried the uninstall article recommended in another Forum query (http://www.symantec.com/docs/TECH149057). The Uninstall script referenced does not exist on my machine (in any directory), nor does the directory (/Applications/PGP.app/Contents/Resources/.  

I would really rather not try to interactively execute all the sudo and other commands documented - I'm afraid I'll make a mistake and damage something. 

So, can you help? 

Thanks