I can't explain the crash on loading StacksDocklet2
personally I just tried this version for beeing of some help and it's working fine
I opened your crash report and I noticed that everything is in the right place
"C:\Program Files\Stardock\ObjectDockFree\Docklets\StackDocklet2.0\StackDocklet.dll"
"C:\Program Files\Stardock\ObjectDockFree\StackLib.dll"
but I'm with the Wiz second suggestion: the StandaloneStack2
yes you are right ObjectDock running the StackDocklet uses 1.000 more RamMemory and StandaloneStack uses 12.000 and 8.700virtual only when the stack is open
well I'm also on XP and I think that it's RamMemory really well spent !