External Command-Document are temporary disabled

[markjvlampad]

Does anybody experience this kind of external command error?

how did you sort this out?

when I use this in macro it works perfectly. but when I use external command, I get the error.

using (Transaction t = new Transaction(doc,"Create ViewSet"))
{
t.Start();
string setName = "SheetSet Name";
try
{
viewSheetSetting.SaveAs(setName);
}
catch (Autodesk.Revit.Exceptions.InvalidOperationException)
{
TaskDialog.Show("Error", setName + " is already in use");
t.RollBack();
return;
}
t.Commit();
}

[jeremytammik · Accepted solution]

Maybe you have set read-only transaction mode. Maybe your document is read-only. Maybe some other command is blocking something. Can you modify your document manually through the user interface?