"J. P. Gilliver (John)" wrote

| Don't know what "in-process" means, but Turnpike is (I think) indeed a
| shell extension. It worked right up to the last pre-release version of
| 7-64 - which still contained whatever was needed, and switched to it
| when required - but under the first official release (and all since), it
| doesn't.
|

In-process means that a library is loaded into the
same process, which means shared memory addresses.
It's sort of like talking to someone in your house vs
someone next door. The conversation is in the context
of your own house.
A sheel extension is a component that provides functionality
in Explorer, like an Explorer Bar or Property Page. If the
Turnpike software worked at first on Win64 then the problem
probably has nothing to do with 32/64.