Classes don't behave the same in threads

Question

I'm trying to run a long list (an entire domain's users) in a thread. If I don't run the function as a thread it runs fine. But if I put it in a thread I get an error at run-time.
Code:
private void RunThread()
Domain3 localDomain = GetDomain(); // callback function
users = GetUsersList(); // callback function
object[] fields = new object [datADGrid.Columns.Count];
foreach (User3 user in users) // complains that it fails to match target type
fields [0] = user.Name;
int index = 1;
The problem is in the foreach loop where, apparently, 'user' isn't of the same type as the components of the 'users' collection yet this same code works fine when run under a non-thread function. As a thread and as a stand-alone function the code calls the same callback functions to get the Domain and the Users.
This is the callbackfunction for returning the User list. users is already set to reference domain.Users.
Code:
private Users GetUsersList()
if (this.InvokeRequired)
GetUsers d = new GetUsers(GetUsersList);
this.Invoke(d, new object[] { });
return users;
else
return users;
I might add that I've also tried the User5 class.

Answer 1

my colleague complained about this too until he turned his overprint preview/separations preview on.
in the full suite, color management between the apps is handled by bridge but it is very easy to break by altering color settings in an one app without updating the others. go to bridge and to go the edit menu and select "creative suite color settings". the dialog box which comes up will tell you straight away if the profiles are synchronised or not.
a method of control would be to take a sample pic into photoshop and make sure it has the same color profile applied to it as indesign is using. save it and close, and then open indesign and place the pic into indesign. how does it look now... similar, different? what happens when a pic which uses a different profile is placed into indesign... does it look the same or different? to really test this, take an RGB pic and convert it to CMYK using the SNAP profile, save and close. THEN, take the same RGB pic and convert it to CMYK using one of the FOGRA profiles and save that. place both into indesign and see what happens.