Getting "The pipe has been ended" When Using GetItems

[zenfreak]

Every time I try to GetItems from a list like this:

string randomListValues = rnd.Next(1, 7).ToString();
string myListItem = string.Join(" ", project.Lists["List 1"].GetItems("random" + randomListValues + "(1,12-15,35-end)"));

I get a popup error saying:

There was an error reading from the pipe: The pipe has been ended. (109, 0x6d).

If I'm only getting 1 item by using GetItem it works fine.

I get the same result when using:

string myString = string.Join(";", project.Lists["List 1"].GetItems("random20(1,12-15,35-end)"));

 

[zenfreak]

Still needing this one