Strange Marshalling error

[Dave Harris]

One of our customers using our Mixed mode application
reported the following error message:

Title = "Microsoft Internet Explorer"

Can not marshal parameter #1: Invalid managed/unmanaged
type combination (Int32/UInt32 must be paired with I4 or
U4).
The customer unfortunately took it upon himself to
upgrade from IE 5.5 to 6.0 and the problem went away. He
could not precisely say what he was doing when it
happened either except to say that it happened more than
once.

The area of the application that the user was supposedly
in has no direct ties to any internet type communications
and we have not yet been able to reproduce the problem.

Can anybody tell me what the heck this message even
means? If I can make some sense of it maybe I will have
a shot at narrowing in on the problem.

Thanks.

[Nicholas Paldino [.NET/C# MVP]]

Dave,

Without seeing a call stack, or any kind of information about the call
that was made, it is hard to tell. How much managed/unmanaged interop are
you doing? Can you give any more details about what happened?
--
- Nicholas Paldino [.NET/C# MVP]
- mv*@spam.guard.caspershouse.com

"Dave Harris" <an*******@discussions.microsoft.com> wrote in message
news:32****************************@phx.gbl...

One of our customers using our Mixed mode application
reported the following error message:

Title = "Microsoft Internet Explorer"

Can not marshal parameter #1: Invalid managed/unmanaged
type combination (Int32/UInt32 must be paired with I4 or
U4).
The customer unfortunately took it upon himself to
upgrade from IE 5.5 to 6.0 and the problem went away. He
could not precisely say what he was doing when it
happened either except to say that it happened more than
once.

The area of the application that the user was supposedly
in has no direct ties to any internet type communications
and we have not yet been able to reproduce the problem.

Can anybody tell me what the heck this message even
means? If I can make some sense of it maybe I will have
a shot at narrowing in on the problem.

Thanks.