Use of the no-longer-supported parameter |cols=, or use of the first unnamed parameter (aka |1=) along with |2= or a second unnamed parameter for the template's content, will generate a red error message. To fix this error, use |colwidth= instead of attempting to specify the number of columns.

The presence of an equals sign within the template's content can also cause display problems and red error messages. To fix this problem, add |1= in front of the template's content.