When you get a compile error from your coded test steps then you look at the log Test Studio does not specify which items are just compiler warnings versus real compile errors. You have to look carefully to determine which items listed are actual compile errors and which are only warnings. For example "The variable 'size' is assigned but its value is never used" is only a warning, but it looks like a "compile error" in the log. This is confusing and people think it must be "fixed" before you can successfully run the test.